Update docker config

[EvgeniyEsaulkov]

Summary

This PR updates docker configuration a bit:

• installs gcompat library - it's required for nokogiri gem. This solution described on the Nokogiri website
• replaces bin/rails db:migrate within docker-entrypoint.sh script with bin/rails db:prepare. It's because due the first run of container database doesn't exist yet and an error has raised

References

• Resolves #### Issue
• GitHub Pull Request ####

[EvgeniyEsaulkov]

If you follow installation instructions it will fail

To reproduce run:

# Required if you already have the project installed
docker volume rm rails-base-graphql-api_db-data \
                 rails-base-graphql-api_ruby-bundle

bin/docker-setup
bin/tests
bin/quality

Why do you run docker-setup and then use scripts without docker?

[DmitryBarskov]

@EvgeniyEsaulkov sorry, I meant the scripts with docker- prefix

Here is the right variant to reproduce the problem:

# Required if you already have the project installed
docker volume rm rails-base-graphql-api_db-data \
                 rails-base-graphql-api_ruby-bundle

bin/docker-setup
bin/docker-tests
bin/docker-quality

After this I have all tests failed because there is no database set up.

[DmitryBarskov]

I suppose that means that we have to leave bin/docker-setup unchanged

[EvgeniyEsaulkov]

I suppose that means that we have to leave bin/docker-setup unchanged

It doesn't depend on docker-setup - error during tests appears in both old and new versions of this file. docker/quality works well for me with both versions.

What do you think if we run db:schema:load before running tests like we do it on Semaphore CI?