FROM alpine:3.12 AS builder

# Download QEMU, see https://github.com/docker/hub-feedback/issues/1261
RUN QEMU_URL=https://github.com/balena-io/qemu/releases/download/v5.2.0%2Bbalena4/qemu-5.2.0.balena4-aarch64.tar.gz \
    && apk add curl && curl -L $QEMU_URL | tar zxvf - -C . --strip-components 1

# Start second (arm64v8) stage
FROM arm64v8/alpine:3.12

# Add QEMU from build stage
COPY --from=builder qemu-aarch64-static /usr/bin

# Install Node and Yarn
RUN apk add --update --no-cache nodejs npm yarn

# Define some ENV Vars
ENV PORT=80 \
    DIRECTORY=/app \
    IS_DOCKER=true

# Create and set the working directory
WORKDIR ${DIRECTORY}

# Copy over both 'package.json' and 'package-lock.json' (if available)
COPY package*.json ./

# Install project dependencies
RUN yarn

# Copy over all project files and folders to the working directory
COPY . .

# Build initial app for production
RUN yarn build

# Expose given port
EXPOSE ${PORT}

# Finally, run start command to serve up the built application
CMD [ "yarn", "build-and-start"]

# Run simple healthchecks every 5 mins, to check the Dashy's everythings great
HEALTHCHECK --interval=5m --timeout=2s --start-period=30s CMD yarn health-check
