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Reviewed-on: #1

.gitea/workflows/ci.yaml

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+name: Build & Push Docker Image
+run-name: "Build & publish go-micro-service Docker image"
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest # ← must match your Gitea Act Runner label
+
+    steps:
+      # ----------------------------------------------------------
+      # 1. Check out code
+      # ----------------------------------------------------------
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # ----------------------------------------------------------
+      # 2. Set required variables
+      # ----------------------------------------------------------
+      - name: Set environment variables
+        run: |
+          echo "REGISTRY=${{ gitea.server_url }}" >> $GITHUB_ENV
+          echo "IMAGE_NAME=${{ gitea.repository }}" >> $GITHUB_ENV
+          echo "TAG=latest" >> $GITHUB_ENV
+
+      # ----------------------------------------------------------
+      # 3. Login to Gitea Container Registry
+      # You must create a secret: GITEA_REGISTRY_TOKEN
+      # ----------------------------------------------------------
+      - name: Log in to Gitea Container Registry
+        run: |
+          echo "${{ secrets.REGISTRY_TOKEN }}" | \
+          docker login ${{ env.REGISTRY }} \
+            -u "${{ gitea.actor }}" --password-stdin
+
+      # ----------------------------------------------------------
+      # 4. Build Docker image from your Dockerfile
+      # ----------------------------------------------------------
+      - name: Build Docker image
+        run: |
+          docker build -t git.mset.dk/${{ env.IMAGE_NAME }}:${{ env.TAG }} .
+
+      # ----------------------------------------------------------
+      # 5. Push Docker image
+      # ----------------------------------------------------------
+      - name: Push Docker image
+        run: |
+          docker push git.mset.dk/${{ env.IMAGE_NAME }}:${{ env.TAG }}

Dockerfile

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+# ------------------------------------------------------------
+# 1. Build stage
+# ------------------------------------------------------------
+FROM golang:1.25-alpine AS builder
+
+RUN apk add --no-cache git
+
+WORKDIR /app
+
+# Dependencies first (cache friendly)
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy the entire codebase
+COPY . .
+
+# Build for the architecture of the host (ARM64 runner)
+RUN CGO_ENABLED=0 go build -o server .
+
+# ------------------------------------------------------------
+# 2. Final minimal runtime image
+# ------------------------------------------------------------
+FROM alpine:3.20
+
+RUN adduser -D -g '' appuser
+
+WORKDIR /app
+
+COPY --from=builder /app/server .
+
+EXPOSE 8080
+
+USER appuser
+
+CMD ["./server"]