IOException while loading wave configuration from class path

I am attempting to enable Coroutine support in my nginx-clojure instance and have followed the instructions dictated in this guide. However, on start I am receiving an IO exception when it attempts to load my wave configuration file.

Stack:

java.io.IOException: can not load resource [wave_cfg.txt] from classpath at nginx.clojure.wave.MethodDatabaseUtil.load(MethodDatabaseUtil.java:35) at nginx.clojure.wave.JavaAgent.buildClassFileTransformer(JavaAgent.java:191) at nginx.clojure.wave.JavaAgent.premain(JavaAgent.java:100) 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 sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386) at sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401)

I have placed my wave_cfg.txt file directly under the coroutine-udfs folder and added it to the class path just as I'm adding my other library paths, and given full permissions to the directories and their subfolders.

Options depicted below...

jvm_classpath "libs/:libs/prometric/:jars/:coroutine-udfs/";
jvm_options "-javaagent:/etc/nginx-clojure/jars/nginx-clojure-0.4.5.jar=mb";
jvm_options "-Xbootclasspath/a:/etc/nginx-clojure/jars/nginx-clojure-0.4.5.jar";
jvm_options "-Dnginx.clojure.wave.udfs=wave_cfg.txt";

Any ideas?

Edit: For reference this is running in a Docker container

Start with the linked configuration guide and the stack trace, then inspect MethodDatabaseUtil.java:35 and JavaAgent.java:191 to understand how wave_cfg.txt is loaded. Reproduce the startup in the Docker setup using the shown classpath and JVM options; done means the configuration loads successfully or the expected resource-path requirement is documented.