rename yml files to yaml.

.gitea/workflows/build_release.yaml

@@ -0,0 +1,28 @@
+name: build_release
+
+on:
+  push:
+    tags: ["v[0-9].[0-9].[0-9]"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install Docker
+        uses: https://github.com/papodaca/install-docker-action@v1
+      - name: Log into container registry
+        uses: docker/login-action@v2
+        with:
+          registry: gitea.cheezers.org
+          username: ${REPO_OWNER}
+          password: $${{ secrets.PASSWORD }}
+      - name: Set env
+        run: echo "GIT_TAG=$${GITHUB_REF#refs/*/}" >> $$GITHUB_ENV
+      - name: Build Docker Image
+        run: docker build -t gitea.cheezers.org/${REPO_OWNER}/${REPO_NAME}:$${{env.GIT_TAG}} .
+      - name: Push Tagged Image
+        run: docker push gitea.cheezers.org/${REPO_OWNER}/${REPO_NAME}:$${{env.GIT_TAG}}