Read directory for temporary credentials from file .testcontainers.properties

[ckunki]

Rationale

Sometimes a developer is working on multiple projects in parallel, e.g. bucketfs-client and bucketfs-java. When ETC creates the temporary credentials in subfolder target of the resp. project source tree then each project has its own credentials, in consequence containers are different and docker will not reuse them but start a separate instance.

Sample entry

temporary.credentials.directory=/home/chku/.testcontainer-temporary-credentials

[ckunki]

Feedback from discussion with @redcatbear :

• edge case
• imposes significant preconditions:
  • both projects must request exactly the same version and variant of the database in the container
  • the projects must not apply any additional changes to the docker container
• raises the risk of changes to the running container that interfere with the requirements of the other project using the same container

[ckunki]

Closing the current ticket.