[iSaluki]

Changes

• This change adds a health check to the "db" service.
• The health check uses the "pg_isready" command. This command tests if the database is ready.
• This change adds a wait condition to the "pinepods" service. The "pinepods" service now waits until the "db" service is healthy before it starts.
• This change adds the "restart: always" policy to the "pinepods" service and to the "valkey" service. The "db" service already had this policy.

Need for the change

• Before this change, the "pinepods" service started as soon as the "db" container started. The "pinepods" service did not wait until the database was ready to accept connections.
• The "pinepods" application tries to connect to the database 30 times. Each try happens about 1 second after the last try.
• If the database is not ready within about 30 seconds, the "pinepods" application stops with an error.
• Before this change, only the "db" service had the "restart: always" policy. The "pinepods" service did not have this policy.
• When the "pinepods" application stopped with an error, Docker did not start it again.
• The user then had to start the "pinepods" service again by hand.
• This problem can happen on the first start of the stack. It can also happen when the host system is slow.
• This change stops this problem. The "pinepods" service now waits for the database. If the "pinepods" service still fails, Docker starts it again automatically.

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[madeofpendletonwool]

This exposes ports and everything. I think you copied a compose into this. This is not the right approach. From a security perspective we don't want to expose postgres ports. Plus, this only works if someone actually uses compose, and people deploy pinepods in a lot of different way. Additionally, there are multiple compose examples, this touches only one.
I've expanded the wait and fixed a couple bugs in this pr: #1044
I think this will account for everything anyone should really need.