Add CI/CD workflow + Dockerfile

.gitea/workflows/docker-build.yml

@@ -0,0 +1,25 @@
+name: Docker Build & Push
+on:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: linux
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.kgessner.de
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.GITEA_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: git.kgessner.de/luiicode/test-image:latest

Dockerfile

@@ -0,0 +1,4 @@
+FROM alpine:latest
+LABEL org.opencontainers.image.source="https://git.kgessner.de/LuiiCode/test-repo"
+RUN echo "Hello from Gitea CI/CD" > /message.txt
+CMD ["cat", "/message.txt"]