Add gitea workflow

.gitea/workflows/default.yaml

@@ -0,0 +1,37 @@
+name: default
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Load variables from the .env file in the repository
+      - name: Load .env variables
+        run: |
+          if [ -f .env ]; then
+            grep -v '^#' .env >> $GITHUB_ENV
+          else
+            echo ".env file not found, skipping load."
+          fi
+
+      - name: Login to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY_URL }}
+          username: ${{ github.actor }}
+          password: ${{ env.AUTH_TOKEN }}
+
+      - name: Build Docker Image
+        run: |
+          docker build -t ${{ env.REGISTRY_URL }}/${{ github.repository }}:latest .
+
+      - name: Push Docker Image
+        run: |
+          docker push ${{ env.REGISTRY_URL }}/${{ github.repository }}:latest