Create docker-publish.yml

.github/workflows/docker-publish.yml

@@ -0,0 +1,30 @@
+name: Docker Publish
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  docker-publish:
+    name: Docker Publish
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v1
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build
+      run: |-
+        docker build \
+          --tag "ghcr.io/gitea-group-sync/gitea-group-sync:master" \
+          .
+
+    - name: Publish
+      run: |-
+        docker push "ghcr.io/gitea-group-sync/gitea-group-sync:master"