Update oaff/testing/Dockerfile to benefit from a multistage build and decrease time taken for tests to run. Explanation from @cuttlefish in this PR:
The testing Dockerfile seems to inherit from the main image, then install a bunch of dependencies. That'll be pretty slow. All of the test requirements will need to be installed every time a single file changes in the base image.
A multistage build would be a lot faster, but I'm not sure how much time you have to put into this.
It is also worth considering a multistage build in /Dockerfile:
The first stage would build the Python dependencies with the required OS dependencies
The second stage would create an image containing the relevant built python dependencies, and runtime OS dependencies curl, but none of the dependencies from the first stage (libpq-dev, python3-pip, python3-psycopg2).
Update
oaff/testing/Dockerfileto benefit from a multistage build and decrease time taken for tests to run. Explanation from @cuttlefish in this PR:It is also worth considering a multistage build in
/Dockerfile:curl, but none of the dependencies from the first stage (libpq-dev,python3-pip,python3-psycopg2).