Merge pull request #20 from rohitkumbhar/19-docker-image-architecture

#19 Enable multiplatform builds

.github/workflows/docker-build.yaml

@@ -26,11 +26,14 @@ jobs:
         registry: ghcr.io
         username: ${{ github.actor }}
         password: ${{ secrets.GHCR_PACKAGE_PAT }}
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
     - name: Build and push Docker image
       uses: docker/build-push-action@v6
       with:
         context: .
         file: ./Dockerfile
+        platforms: linux/amd64,linux/arm64
         push: ${{ github.event_name != 'pull_request' }}
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,5 +1,6 @@
-FROM node:20 AS frontend
-
+FROM --platform=$BUILDPLATFORM node:20 AS frontend
+ARG TARGETOS
+ARG TARGETARCH
 
 WORKDIR /surmai
 RUN mkdir node_modules
@@ -18,7 +19,9 @@ RUN npm install -g npm@10.3.0 # For windows
 RUN npm install --no-audit
 RUN npm run build
 
-FROM golang:1.23.4-alpine3.21 AS backend
+FROM --platform=$BUILDPLATFORM golang:1.23.4-alpine3.21 AS backend
+ARG TARGETOS
+ARG TARGETARCH
 
 WORKDIR /build
 
@@ -28,15 +31,11 @@ COPY backend/go.sum .
 RUN go mod download
 
 COPY backend .
-RUN go build -o surmai-backend
+RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o surmai-backend
 
 
 FROM alpine:3.21
 
-RUN apk add --no-cache \
-    unzip \
-    ca-certificates
-
 COPY backend/init.sh /pb/init.sh
 COPY backend/datasets /datasets
 COPY --from=frontend /surmai/dist /pb_public