ci: multi-platform docker image (#11479)

* ci: multi-platform build

* ci: remove riscv as node doesn't support it

* ci: correct step name

it's no longer logging in to docker hub

* ci: remove less common architectures

* ci: github actions cache for docker builds

* fix: use `--omit` flag to actually avoid installing dev dependencies

* feat: two-stage build

* feat: add platform-specific rebuild

* fix: run install if target arch is different from build arch

* fix: whitespace

* fix: correct build order

* fix: remove unnecessary conditional

* fix: remove unnecessary platofm specifier

* fix: correct copy

.github/workflows/docker.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
 
-      - name: Login to Docker Hub
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
@@ -54,3 +54,6 @@ jobs:
           file: ./Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -1,3 +1,19 @@
+FROM --platform=$BUILDPLATFORM node:lts as npm
+
+RUN mkdir -p /usr/src/build && \
+    chown -R node:node /usr/src/build
+WORKDIR /usr/src/build
+
+ARG NODE_ENV
+ENV NODE_ENV $NODE_ENV
+
+COPY --chown=node:node install/package.json /usr/src/build/package.json
+
+USER node
+
+RUN npm install --omit=dev
+
+
 FROM node:lts
 
 RUN mkdir -p /usr/src/app && \
@@ -7,11 +23,11 @@ WORKDIR /usr/src/app
 ARG NODE_ENV
 ENV NODE_ENV $NODE_ENV
 
-COPY --chown=node:node install/package.json /usr/src/app/package.json
+COPY --chown=node:node --from=npm /usr/src/build /usr/src/app
 
 USER node
 
-RUN npm install --only=prod && \
+RUN npm rebuild && \
     npm cache clean --force
 
 COPY --chown=node:node . /usr/src/app