feat: Build & Push images as part of CI

[andoriyu]

Add steps to build & push image to GitHub's container registry.

Steps setup to:

• tag image with git commit SHA if it's a regular push event
• tag image with git's tag minus v prefix if it's a tag build (I didn't update the job to run on tag events, though)
• tag image as latest if it's a build on main branch.

Validated on my fork.

Closes #16

[zhaofengli]

Hi, thanks for the PR! Could you make it so that it checks what permissions are allowed by the current token or make the push step optional, so the CI pipeline doesn't fail for PRs?

[andoriyu]

Hi, thanks for the PR! Could you make it so that it checks what permissions are allowed by the current token or make the push step optional, so the CI pipeline doesn't fail for PRs?

I don't think there is a way to check it. Main issue in this case: head for this PR is my fork and it's trying to push image to your repository.

@zhaofengli maybe it makes more sense to no run this on PRs at all?

[zhaofengli]

Yeah, that should work fine.

[andoriyu]

@zhaofengli updated to only run on push to default branch and made it optional.

[zhaofengli]

❤️ LGTM. Sorry for the delay!

[pbek]

I was trilled waiting for this docker image! So I was testing it now immediately. Unfortunately it doesn't seem to do anything yet.

My docker-compose.yaml:

version: '3.7'
services:
  attic:
    image: ghcr.io/zhaofengli/attic:latest

When I run the service it just quits.
This is the log:

attic-test-attic-1  | Attic Server 0.1.0 (release)
attic-test-attic-1  | Error: No such file or directory (os error 2)

[pbek]

Unfortunately I have almost no experience yet in dockerizing this the "nix" way. 😅 I've only experience concocting Dockerfiles. 😁

[pbek]

I came up with an working example:

version: '3.7'
services:
  attic:
    image: ghcr.io/zhaofengli/attic:latest
    volumes:
      - ./attic/server.toml:/attic/server.toml
      - ./attic/server.db:/attic/server.db
      - attic-storage:/attic/storage
    command: [ "-f", "/attic/server.toml" ]
    ports:
      - 8080:8080

volumes:
  attic-storage:

[pbek]

I added #47.