chore: Container builds

[tuliomir]

Motivation

We need a way to run the Wallet Service inside a containerized environment containing a live and pristine blockchain privatenet. The first usage of this feature is being developed in HathorNetwork/hathor-wallet-lib#909

Acceptance Criteria

• Both the Daemon and the Wallet Service packages need independent Docker images
• There should be a way to run the migrations in the pristine MySQL instance before the Daemon container is started. For now, a third Docker image is created for the sole purpose of running the migrations.
• There should be solutions for the currently necessary connections to external services such as AWS, Firebase and other third parties. For now, they are being mocked.

Notes

Although it's very important to automatically build all three images with every CI/CD deployment, this feature is not meant to be implemented now. The main objective of this PR is to have viable images for the integration tests on the Lib 909 mentioned above.

As soon as we have this infrastructure well tested, we'll begin work on the CD phase. For now, the Docker images will have to be published manually.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged
• Make sure either the unit tests and/or the QA tests are capable of testing the new features
• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.