Multi-stage Dockerfile for building gatsbyjs app

Dockerfile

# stage: 1
FROM node:11-alpine AS build

ARG GATSBY_API_BASE_HOST
ENV GATSBY_API_BASE_HOST $GATSBY_API_BASE_HOST

ARG GATSBY_BASE_URL
ENV GATSBY_BASE_URL $GATSBY_BASE_URL

ARG GA_CODE
ENV GA_CODE $GA_CODE

RUN apk add --no-cache --virtual .gyp python make g++

WORKDIR /app
ENV NODE_ENV=production

COPY package.json yarn.lock ./
RUN yarn --frozen-lockfile --non-interactive

COPY . .
RUN yarn build


# stage: 2 — the production environment
FROM nginx:alpine

COPY nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=build /app/public /usr/share/nginx/html

EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]