Add dockerfile and build pipline for Gitea

.gitea/workflows/release-container.yml

@@ -0,0 +1,32 @@
+name: release-container
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set image vars
+        run: |
+          echo "IMAGE=git.dou.bet/iamdoubz/drawit" >> $GITHUB_ENV
+          echo "TAG=${GITHUB_REF_NAME}" >> $GITHUB_ENV
+
+      - name: Login to registry
+        run: |
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.dou.bet -u "${{ secrets.REGISTRY_USER }}" --password-stdin
+
+      - name: Build image
+        run: |
+          docker build -t $IMAGE:$TAG -t $IMAGE:latest .
+
+      - name: Push image
+        run: |
+          docker push $IMAGE:$TAG
+          docker push $IMAGE:latest