containerized native yarn berry cross-compilation from amd64 on github actions to arm64 for use on aws ecr and eks running graviton nodes

Dockerfile

FROM --platform=$BUILDPLATFORM node:18-alpine AS builder

WORKDIR /app
ENV NODE_ENV=production

RUN apk add build-base

ARG TARGETARCH
ENV npm_config_arch=$TARGETARCH
COPY yarn.lock .
COPY .yarn .yarn
COPY package.json .
COPY package-lock.json .
COPY .yarnrc.yml .
COPY tsconfig.json .

RUN yarn set version berry
RUN yarn

COPY . .

RUN yarn build

FROM --platform=$TARGETPLATFORM node:18-alpine

WORKDIR /app

COPY --from=builder /app .

CMD ["yarn", "start"]

github-actions-workflow.yml

name: your-workflow-name
jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    env:
      IMAGE_TAG: ${{ secrets.AWS_ACCOUNT_ID }}.dkr.ecr.${{ secrets.AWS_REGION }}.amazonaws.com/${{ secrets.ECR_REPOSITORY }}
    steps:
      - name: "checkout"
        uses: actions/checkout@v3
      - name: "authenticate with aws"
        uses: aws-actions/configure-aws-credentials@v2
        with:
          aws-region: ${{ secrets.AWS_REGION }}
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
      - name: "log into ecr"
        uses: aws-actions/amazon-ecr-login@v1
      - name: "set up qemu"
        uses: docker/setup-qemu-action@v2
        with:
          platforms: 'arm64'
      - name: "set up buildx"
        uses: docker/setup-buildx-action@v2
      - name: "build and push"
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          tags: ${{ env.IMAGE_TAG }}:latest
          cache-from: type=registry,ref=${{ env.IMAGE_TAG }}:latest
          cache-to: type=inline
          platforms: linux/arm64