deps: update docker/login-action action to v4

.gitea/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
           registry: git.studiovita.li
           username: ${{ secrets.REGISTRY_USERNAME }}
           password: ${{ secrets.REGISTRY_TOKEN }}
-      - uses: docker/build-push-action@v7
+      - uses: docker/build-push-action@v6
         with:
           context: images/act
           push: true

README.md

@@ -1,31 +0,0 @@
-# studiovitali/actions
-
-Shared Gitea Actions for studio CI workflows.
-
-## Composite actions
-
-- **[`sops`](sops/)** — install checksum-verified SOPS and decrypt `*.sops.*` files with an age key
-- **[`ssh-copy`](ssh-copy/)** — `rsync` a local directory to a remote host over SSH
-- **[`ssh-run`](ssh-run/)** — run a script on a remote host over SSH
-
-Reference a local action from a workflow:
-
-```yaml
-- uses: studio/actions/ssh-run@main
-  with:
-    host: ${{ secrets.HOST }}
-    user: deploy
-    key: ${{ secrets.SSH_KEY }}
-    script: ./deploy.sh
-```
-
-## Runner image
-
-`images/act` builds `git.studiovita.li/studio/actions:ubuntu-latest` from the Gitea
-runner image, adding `rsync` and SOPS. Built weekly and on `images/**` changes via
-[`.gitea/workflows/build.yml`](.gitea/workflows/build.yml).
-
-## Maintenance
-
-Dependencies pinned in `action.yml` / `Dockerfile` are updated by [Renovate](renovate.json)
-using `## renovate:` annotations.