Gatsby.js Docker

.env

GATSBY_WEBPACK_PUBLICPATH=/
ENABLE_REFRESH_ENDPOINT=true

Dockerfile

FROM node:10.15 as builder
WORKDIR /app
COPY . . 
RUN npm install

FROM node:10.15-alpine
WORKDIR /app
COPY --from=builder app .
EXPOSE 8000
CMD ["npm", "run", "dev", "--", "-H", "0.0.0.0"]

Dockerrun.aws.json

{
    "AWSEBDockerrunVersion": 1,
    "Ports": [
        {
            "ContainerPort": 8000,
            "HostPort": 8000
        }
    ] 
}

A basic setup for running your Gatsby.js project in Docker.
Run this in the cloud & you effectively have a working Gatsby preview server.

Once it's up - all you need to do is send a POST request to https://yourpreviewdomain.com/__refresh to see your data update live.

Really useful if you're using a datasource like Contentful or Wordpress.

Also included is a Dockerrun.aws.json file, in case you want to use this with Elastic Beanstalk.