Add automatic docker building

.gitea/workflows/docker.yml

@@ -0,0 +1,26 @@
+name: Build and Publish docker image
+
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.qwerinope.com
+          username: qwerinope
+          password: ${{ secrets.PAT }}
+      - name: Get repository
+        uses: actions/checkout@v4
+      - name: Docker Build and push
+        uses: docker/build-push-action@v6
+        with:
+          file: Dockerfile.dogbot
+          context: .
+          push: true
+          tags: git.qwerinope.com/dogbot:latest