Writes quick Dockerfile, cos - why not?

Dockerfile

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+FROM node:18-alpine AS BUILD_IMAGE
+
+# Set the platform to build image for
+ARG TARGETPLATFORM
+ENV TARGETPLATFORM=${TARGETPLATFORM:-linux/amd64}
+
+# Get environment variables
+ARG NODE_ENV
+
+# Install additional tools needed if on arm64 / armv7
+RUN \
+  case "${TARGETPLATFORM}" in \
+  'linux/arm64') apk add --no-cache python3 make g++ ;; \
+  'linux/arm/v7') apk add --no-cache python3 make g++ ;; \
+  'linux/arm64/v8') apk add --no-cache python3 make g++ ;; \
+  esac
+
+# Create and set the working directory
+WORKDIR /app
+
+# Install app dependencies
+COPY package.json package-lock.json ./
+RUN npm install
+
+# Copy over all project files and folders to the working directory
+COPY . ./
+
+# Build initial app for production
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine
+
+# Define some ENV Vars
+ENV PORT=80 \
+  DIRECTORY=/app \
+  IS_DOCKER=true
+
+# Create and set the working directory
+WORKDIR ${DIRECTORY}
+
+# Update tzdata for setting timezone
+RUN apk add --no-cache tzdata
+
+# Copy built application from build phase
+COPY --from=BUILD_IMAGE /app ./
+
+# Finally, run start command to serve up the built application
+CMD [ "npm", "start" ]
+
+# Expose the port
+EXPOSE ${PORT}
+
+# Run simple healthchecks every 5 mins, to check that everythings still great
+HEALTHCHECK --interval=5m --timeout=5s --start-period=30s CMD yarn health-check