Add an action.

.gitea/workflows/build.yaml

@@ -0,0 +1,18 @@
+name: Build
+run-name: Building docker container.
+on:
+  push:
+    branches: stable
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update Package Repository.
+        run: apt update -y
+      - name: Gather dependencies.
+        run: apt install -y docker.io
+      - name: Check repository out.
+        uses: actions/checkout@v3
+      - name: Build Docker Image
+        run: docker build -t quik/docker-cross-compiler