Add a way to define dependencies for deployed applications

[martin-helmich]

Common examples:

• Deploy a PostgreSQL database as a regular container, alongside your zero-config application
• Automatically use a MySQL or Redis database as a managed resource

[gandie]

Yeah that the logical next step! I think we can achieve this in multiple ways:

• Check environment and/or other spots for database urls. Use to spin up and wire correct db. This would be kind of an extension to what railpack does, but focussed on supporting services, more specifically databases. Railpack plan might be a good starting from where to look for config and further hints on project structure
• Does not hit the spot directly, but might help: Weave in build capabilities into existing stack commands, in order to allow commands similar to docker compose up --build where the build part is done via new mechanics before the stack is fired up

Will gaze around on that topic, maybe i stumble on something useful in the field