Please help to configure testcontainers for runs inside docker

Hello,

Could you please advise on how to configure the environment to be able running testcontainers-based tests inside Docker (CI buildagent)?

At the moment a test passes locally but fails on CI on a call to org.testcontainers.containers.GenericContainer.start(). I checked the documentation and found this section which instructs mapping docker.sock file to the CI. That was done and I verified that another docker-from-docker processing is fine (grpc compilation).

My tests use a setup like below:

        val network = Network.NetworkImpl.builder().build()

        val zookeeper = GenericContainer<Nothing>("bitnami/zookeeper:3.4.12").apply {
            it.addExposedPort(2181)
            it.withNetwork(network)
            it.withNetworkAliases("zookeeper")
            it.addEnv("ALLOW_ANONYMOUS_LOGIN", "yes")
        }

        zookeeper.start()

It fails with the exception below. I found this discussion where it's mentioned that a work-around is to install docker into the docker container, however, it looks rather surprising as the testcontainers documentation states that everything should just work in the docker-from-docker mode.

So, could you please advise what is the right way to run testcontainers from Docker?

org.testcontainers.containers.ContainerLaunchException: Container startup failed
	at org.testcontainers.containers.GenericContainer.doStart(GenericContainer.java:242)
	at org.testcontainers.containers.GenericContainer.start(GenericContainer.java:220)
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration.prepareEnvironment(ExternalAccountTestConfiguration.kt:89)
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration.kafkaEndpoint(ExternalAccountTestConfiguration.kt:56)
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f.CGLIB$kafkaEndpoint$1(<generated>)
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f$$FastClassBySpringCGLIB$$8cacd921.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:365)
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f.kafkaEndpoint(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
	... 102 more
Caused by: org.rnorth.ducttape.RetryCountExceededException: Retry limit hit with exception
	at org.rnorth.ducttape.unreliables.Unreliables.retryUntilSuccess(Unreliables.java:83)
	at org.testcontainers.containers.GenericContainer.doStart(GenericContainer.java:235)
	... 115 more
Caused by: org.testcontainers.containers.ContainerLaunchException: Could not create/start container
	at org.testcontainers.containers.GenericContainer.tryStart(GenericContainer.java:315)
	at org.testcontainers.containers.GenericContainer.lambda$doStart$0(GenericContainer.java:237)
	at org.rnorth.ducttape.unreliables.Unreliables.retryUntilSuccess(Unreliables.java:76)
	... 116 more
Caused by: java.lang.reflect.UndeclaredThrowableException
	at com.sun.proxy.$Proxy72.exec(Unknown Source)
	at org.testcontainers.containers.GenericContainer.tryStart(GenericContainer.java:268)
	... 118 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.testcontainers.dockerclient.AuditLoggingDockerClient.lambda$wrappedCommand$14(AuditLoggingDockerClient.java:98)
	... 120 more
Caused by: com.github.dockerjava.api.exception.InternalServerErrorException: {"message":"transport is closing"}

	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.execute(OkHttpInvocationBuilder.java:279)
	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.execute(OkHttpInvocationBuilder.java:257)
	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.post(OkHttpInvocationBuilder.java:118)
	at com.github.dockerjava.core.exec.StartContainerCmdExec.execute(StartContainerCmdExec.java:28)
	at com.github.dockerjava.core.exec.StartContainerCmdExec.execute(StartContainerCmdExec.java:11)
	at com.github.dockerjava.core.exec.AbstrSyncDockerCmdExec.exec(AbstrSyncDockerCmdExec.java:21)
	at com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:35)
	at com.github.dockerjava.core.command.StartContainerCmdImpl.exec(StartContainerCmdImpl.java:46)
	... 125 more

Logs before the exception:

07:44:48.521 [Test worker] INFO  tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f - Starting a container for 'bitnami/zookeeper:3.4.12'
07:44:48.734 [Test worker] INFO  org.testcontainers.dockerclient.DockerClientProviderStrategy - Will use 'okhttp' transport
07:44:50.388 [Test worker] INFO  org.testcontainers.dockerclient.EnvironmentAndSystemPropertyClientProviderStrategy - Found docker client settings from environment
07:44:50.421 [Test worker] INFO  org.testcontainers.dockerclient.DockerClientProviderStrategy - Found Docker environment with Environment variables, system properties and defaults. Resolved: 
    dockerHost=unix:///var/run/docker.sock
    apiVersion='{UNKNOWN_VERSION}'
    registryUrl='https://index.docker.io/v1/'
    registryUsername='root'
    registryPassword='null'
    registryEmail='null'
    dockerConfig='DefaultDockerClientConfig[dockerHost=unix:///var/run/docker.sock,registryUsername=root,registryPassword=<null>,registryEmail=<null>,registryUrl=https://index.docker.io/v1/,dockerConfigPath=/root/.docker,sslConfig=<null>,apiVersion={UNKNOWN_VERSION},dockerConfig=<null>]'

07:44:50.838 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: alpine:3.5, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:44:57.995 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: alpine:3.5, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:45:02.857 [Test worker] INFO  org.testcontainers.DockerClientFactory - Docker host IP address is 172.17.0.1
07:45:03.764 [Test worker] INFO  org.testcontainers.DockerClientFactory - Connected to docker: 
  Server Version: 17.03.2-ce
  API Version: 1.27
  Operating System: Ubuntu 16.04.4 LTS
  Total Memory: 2000 MB
07:45:03.962 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: quay.io/testcontainers/ryuk:0.2.2, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:45:13.626 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: quay.io/testcontainers/ryuk:0.2.2, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:45:16.663 [Test worker] INFO  org.testcontainers.DockerClientFactory - Ryuk started - will monitor and terminate Testcontainers containers on JVM exit
        ℹ︎ Checking the system...
        ✔ Docker version should be at least 1.6.0
        ✔ Docker environment should have more than 2GB free disk space
07:45:17.655 [Test worker] INFO  🐳 [bitnami/zookeeper:3.4.12] - Pulling docker image: bitnami/zookeeper:3.4.12. Please be patient; this may take some time but only needs to be done once.
07:45:17.660 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: bitnami/zookeeper:latest, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:47:08.713 [Test worker] INFO  tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f - Starting a container for '139.59.45.139:5000/familizer/kafka-server:kafka-2.1.0-scala-2.12-familizer.7'
07:47:08.842 [Test worker] INFO  🐳 [139.59.45.139:5000/familizer/kafka-server:kafka-2.1.0-scala-2.12-familizer.7] - Pulling docker image: 139.59.45.139:5000/familizer/kafka-server:kafka-2.1.0-scala-2.12-familizer.7. Please be patient; this may take some time but only needs to be done once.
07:47:08.849 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: 139.59.45.139:5000/familizer/kafka-server:latest, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:54:58.861 [Test worker] INFO  tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f - Starting a container for '139.59.45.139:5000/familizer/external-account-checker:1.27'
07:54:58.881 [Test worker] INFO  🐳 [bitnami/zookeeper:3.4.12] - Creating container for image: bitnami/zookeeper:3.4.12
07:54:58.909 [Test worker] WARN  org.testcontainers.utility.RegistryAuthLocator - Failure when attempting to lookup auth config (dockerImageName: bitnami/zookeeper:3.4.12, configFile: /root/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /root/.docker/config.json (No such file or directory)
07:55:00.596 [Test worker] INFO  🐳 [bitnami/zookeeper:3.4.12] - Starting container with ID: c4843023e453b13e37b8bce47f3178759f5dc51621f23f270fa46ec01226ff78
07:56:21.427 [Test worker] ERROR 🐳 [bitnami/zookeeper:3.4.12] - Could not start container
java.lang.reflect.UndeclaredThrowableException: null
	at com.sun.proxy.$Proxy72.exec(Unknown Source) ~[?:?]
	at org.testcontainers.containers.GenericContainer.tryStart(GenericContainer.java:268) ~[testcontainers-1.9.1.jar:?]
	at org.testcontainers.containers.GenericContainer.lambda$doStart$0(GenericContainer.java:237) ~[testcontainers-1.9.1.jar:?]
	at org.rnorth.ducttape.unreliables.Unreliables.retryUntilSuccess(Unreliables.java:76) ~[duct-tape-1.0.7.jar:?]
	at org.testcontainers.containers.GenericContainer.doStart(GenericContainer.java:235) ~[testcontainers-1.9.1.jar:?]
	at org.testcontainers.containers.GenericContainer.start(GenericContainer.java:220) ~[testcontainers-1.9.1.jar:?]
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration.prepareEnvironment(ExternalAccountTestConfiguration.kt:89) ~[test/:?]
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration.kafkaEndpoint(ExternalAccountTestConfiguration.kt:56) ~[test/:?]
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f.CGLIB$kafkaEndpoint$1(<generated>) ~[test/:?]
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f$$FastClassBySpringCGLIB$$8cacd921.invoke(<generated>) ~[test/:?]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:365) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at tech.harmonysoft.familizer.account.check.test.di.ExternalAccountTestConfiguration$$EnhancerBySpringCGLIB$$556d7e3f.kafkaEndpoint(<generated>) ~[test/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:582) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1135) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1062) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:818) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:724) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:474) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1135) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1062) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:818) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:724) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:197) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1267) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1124) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) [spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) [spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) [spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) [spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) [spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) [spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:139) [spring-boot-test-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) [spring-test-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:117) [spring-test-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108) [spring-test-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at cucumber.runtime.java.spring.CucumberTestContextManager.getContext(SpringFactory.java:247) [cucumber-spring-3.0.2.jar:?]
	at cucumber.runtime.java.spring.CucumberTestContextManager.<init>(SpringFactory.java:239) [cucumber-spring-3.0.2.jar:?]
	at cucumber.runtime.java.spring.SpringFactory.start(SpringFactory.java:132) [cucumber-spring-3.0.2.jar:?]
	at cucumber.runtime.java.JavaBackend.buildWorld(JavaBackend.java:114) [cucumber-java-3.0.2.jar:?]
	at cucumber.runner.Runner.buildBackendWorlds(Runner.java:133) [cucumber-core-3.0.2.jar:?]
	at cucumber.runner.Runner.runPickle(Runner.java:42) [cucumber-core-3.0.2.jar:?]
	at cucumber.runtime.junit.PickleRunners$NoStepDescriptions.run(PickleRunners.java:140) [cucumber-junit-3.0.2.jar:?]
	at cucumber.runtime.junit.FeatureRunner.runChild(FeatureRunner.java:68) [cucumber-junit-3.0.2.jar:?]
	at cucumber.runtime.junit.FeatureRunner.runChild(FeatureRunner.java:23) [cucumber-junit-3.0.2.jar:?]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at cucumber.runtime.junit.FeatureRunner.run(FeatureRunner.java:73) [cucumber-junit-3.0.2.jar:?]
	at cucumber.api.junit.Cucumber.runChild(Cucumber.java:98) [cucumber-junit-3.0.2.jar:?]
	at cucumber.api.junit.Cucumber.runChild(Cucumber.java:55) [cucumber-junit-3.0.2.jar:?]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at cucumber.api.junit.Cucumber$1.evaluate(Cucumber.java:107) [cucumber-junit-3.0.2.jar:?]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:106) [gradle-testing-jvm-4.10.jar:4.10]
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58) [gradle-testing-jvm-4.10.jar:4.10]
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38) [gradle-testing-jvm-4.10.jar:4.10]
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:66) [gradle-testing-jvm-4.10.jar:4.10]
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51) [gradle-testing-base-4.10.jar:4.10]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93) [gradle-messaging-4.10.jar:4.10]
	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source) [?:?]
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:117) [gradle-testing-base-4.10.jar:4.10]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404) [gradle-messaging-4.10.jar:4.10]
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) [gradle-base-services-4.10.jar:4.10]
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) [gradle-base-services-4.10.jar:4.10]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181]
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) [gradle-base-services-4.10.jar:4.10]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at org.testcontainers.dockerclient.AuditLoggingDockerClient.lambda$wrappedCommand$14(AuditLoggingDockerClient.java:98) ~[testcontainers-1.9.1.jar:?]
	... 120 more
Caused by: com.github.dockerjava.api.exception.InternalServerErrorException: {"message":"transport is closing"}

	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.execute(OkHttpInvocationBuilder.java:279) ~[testcontainers-1.9.1.jar:?]
	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.execute(OkHttpInvocationBuilder.java:257) ~[testcontainers-1.9.1.jar:?]
	at org.testcontainers.dockerclient.transport.okhttp.OkHttpInvocationBuilder.post(OkHttpInvocationBuilder.java:118) ~[testcontainers-1.9.1.jar:?]
	at com.github.dockerjava.core.exec.StartContainerCmdExec.execute(StartContainerCmdExec.java:28) ~[testcontainers-1.9.1.jar:?]
	at com.github.dockerjava.core.exec.StartContainerCmdExec.execute(StartContainerCmdExec.java:11) ~[testcontainers-1.9.1.jar:?]
	at com.github.dockerjava.core.exec.AbstrSyncDockerCmdExec.exec(AbstrSyncDockerCmdExec.java:21) ~[testcontainers-1.9.1.jar:?]
	at com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:35) ~[testcontainers-1.9.1.jar:?]
	at com.github.dockerjava.core.command.StartContainerCmdImpl.exec(StartContainerCmdImpl.java:46) ~[testcontainers-1.9.1.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
	at org.testcontainers.dockerclient.AuditLoggingDockerClient.lambda$wrappedCommand$14(AuditLoggingDockerClient.java:98) ~[testcontainers-1.9.1.jar:?]
	... 120 more

Commencez par la documentation d’inside-Docker et la sortie de DockerClientProviderStrategy indiquant unix:///var/run/docker.sock, puis suivez l’échec depuis GenericContainer.start() dans testcontainers 1.9.1. Comparez la configuration de CI signalée aux exigences documentées et documentez la configuration prise en charge ou le diagnostic manquant nécessaire pour que le test s’exécute correctement.