Re-use same image for all appwrite containers during dev

[stnguyen90]

What does this PR do?

During build, every appwrite service builds an image even though they are all the same. This change speeds up the build step by only having 1 service build and then every other container re-use that built image.

Test Plan

Automated tests still pass and Build Appwrite step is faster:

https://github.com/appwrite/appwrite/actions/runs/3047580615/jobs/4915521735

Related PRs and Issues

None

Have you read the Contributing Guidelines on issues?

Yes