Multi-arch capable Dockerfile

Dockerfile

@@ -1,11 +1,16 @@
-FROM docker.io/node:alpine as builder
+FROM --platform=${BUILDPLATFORM} docker.io/library/node:16.13-alpine3.15 as builder
 RUN apk add --no-cache git python3 build-base
-COPY . /app
 WORKDIR /app
-RUN yarn install \
- && yarn build
 
-# Copy the built app from the first build stage
+# Install the dependencies first
+COPY yarn.lock package.json ./
+RUN yarn install
+
+# Copy the rest and build the app
+COPY . .
+RUN yarn build
+
+FROM --platform=${TARGETPLATFORM} docker.io/library/nginx:alpine
 COPY --from=builder /app/target /usr/share/nginx/html
 
 # Values from the default config that can be overridden at runtime