updated git workflows

.gitea/workflows/gitea-ci.yaml

@@ -0,0 +1,25 @@
+name: Build docker image
+run-name: ${{ gitea.actor }} is runs ci pipeline
+on: [ push ]
+
+jobs:
+  push:
+    runs-on: ubuntu-latest
+    needs: build
+    if: gitea.ref == 'refs/heads/master'
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+        with:
+          config-inline: |
+            [registry."git.whimsoc.dev"]
+              http = true
+              insecure = true            
+      - name: Build and push Docker image
+        uses: https://github.com/docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: "git.whimsoc.dev/hendrik/openstreetmap-tile-server:${{gitea.sha}},git.whimsoc.dev/hendrik/openstreetmap-tile-server:latest"