ci: add release-please workflow and update docker publish triggers

Author: chris2k20

.github/workflows/docker-publish.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches: [ "main", "master" ]
     tags: [ "v*", "release-*" ]
+  release:
+    types: [ published ]
   workflow_dispatch: {}
 
 env:
@@ -45,6 +47,7 @@ jobs:
             type=ref,event=pr
             type=ref,event=tag
             type=sha
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' || github.event_name == 'release' }}
 
       - name: Build and push
         uses: docker/build-push-action@v6

.github/workflows/release-please.yml

@@ -0,0 +1,22 @@
+name: Release Please
+
+on:
+  push:
+    branches: [ "main", "master" ]
+  workflow_dispatch: {}
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Release Please
+        uses: googleapis/release-please-action@v4
+        with:
+          release-type: simple
+          package-name: imapbackup
+          # Uses the default GITHUB_TOKEN automatically
+          token: ${{ secrets.APP_TOKEN }}