alpine: add nodejs & build multi-arch (#4380)

Author: jpnurmi

.github/alpine/Dockerfile

@@ -5,7 +5,7 @@ FROM ${BASE}
 RUN apk update
 
 # common
-RUN apk add bash build-base cmake curl git icu lsb-release-minimal sudo tar wget
+RUN apk add bash build-base cmake curl git icu lsb-release-minimal nodejs npm sudo tar wget
 
 # sentry-native
 RUN apk add curl-dev docker-cli libunwind-dev libunwind-static linux-headers openssl-dev zlib-dev xz-dev xz-static

.github/workflows/alpine.yml

@@ -31,10 +31,14 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build ghcr.io/${{ github.repository_owner }}/sentry-dotnet-alpine:${{ matrix.version }}
-        run: docker build --build-arg BASE=alpine:${{ matrix.version }} -t ghcr.io/${{ github.repository_owner }}/sentry-dotnet-alpine:${{ matrix.version }} .
-        working-directory: .github/alpine
+      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-buildx-action@v3
 
-      - name: Push ghcr.io/${{ github.repository_owner }}/sentry-dotnet-alpine:${{ matrix.version }}
-        run: docker push ghcr.io/${{ github.repository_owner }}/sentry-dotnet-alpine:${{ matrix.version }}
-        working-directory: .github/alpine
+      - uses: docker/build-push-action@v6
+        with:
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ghcr.io/${{ github.repository_owner }}/sentry-dotnet-alpine:${{ matrix.version }}
+          context: .github/alpine
+          build-args: |
+            BASE=alpine:${{ matrix.version }}