🔨 Add workflow & dockerfile

.gitea/workflows/nightly.yml

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+name: release-nightly
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: code.smartsheep.studio
+          username: ${{ secrets.DOCKER_REGISTRY_USERNAME }}
+          password: ${{ secrets.DOCKER_REGISTRY_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: code.smartsheep.studio/goatworks/roadsign:nightly

Dockerfile

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+# Building Backend
+FROM golang:alpine as roadsign-server
+
+WORKDIR /source
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /dist ./pkg/cmd/main.go
+
+# Runtime
+FROM golang:alpine
+
+COPY --from=roadsign-server /dist /roadsign/server
+
+EXPOSE 81
+
+CMD ["/roadsign/server"]