testcontainers / testcontainers/testcontainers-python
Question: Can I cache a docker image
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Description
What are you trying to do?
I have a docker image which is based on postgres, but contains
additional some (large) *.sql files in /docker-entrypoint-initdb.d/ .
When the docker container is started, it will import the sql files.
This will delay the startup time until I can access the docker image for testing.
I assume that when I use testcontainers it is similiar to the call
docker run --rm
in the sense, that after the container was used, it is thrown away.
Is it possible to tell testcontainers to cache the container, so the next time I use that image the
database is already initialized?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing the Testcontainers container lifecycle and the Docker behavior implied by docker run --rm, especially PostgreSQL initialization from /docker-entrypoint-initdb.d/. Determine whether reuse or caching is supported, then document the supported behavior or the scope needed for a cacheable initialized container.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- docker, postgres, python
- Domain
- databases, testing
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100