Keystone.js with Docker and Fly.io

.Keystone.js with Docker and Fly.io

So once you figure out all the caveats, running Keystone on Docker and in Fly.io is relatively simple.

package.json:

You need --fix on your setup script for Docker to auto update the schemas

"setup": "keystone postinstall --fix"

NOTES FOR DOCKER:
1. I use Yarn V3 in a monorepo hence the corepack lines and project structure
2. Keystone can't use PnP / Hoisting atm which is where the node linker comes in .yarnrc.yml
3. You have to install the workspace-tools plugin for yarn v3 to use the production install
4. Multi-part dockerfiles reduce overall size and deployment times
5. If you have ENV variable checks that throw anywhere in your code you
   have to set them blank at the top as keystone runs your code during setup and build (for no reason)

.yarnrc.yml

nodeLinker: node-modules

plugins:
  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
    spec: "@yarnpkg/plugin-workspace-tools"

Dockerfile

FROM node:18-bullseye-slim as setup

ENV PORT 8080
ENV NODE_ENV production
RUN mkdir /app
WORKDIR /app

RUN corepack enable
RUN corepack prepare yarn@3.3.1 --activate

# All Dependencies
FROM setup as base
COPY apps/keystone/package.json package.json
COPY apps/keystone/yarn.lock yarn.lock
COPY apps/keystone/.yarnrc.yml .yarnrc.yml
COPY apps/keystone/.yarn .yarn

FROM base as deps
RUN yarn workspaces focus --all

# Build the app
FROM base as build

COPY --from=deps /app/node_modules node_modules
COPY apps/keystone/keystone.ts keystone.ts
COPY apps/keystone/configuration configuration
COPY apps/keystone/schemas schemas
RUN yarn run setup
RUN yarn run build

# Production Dependencies
FROM base as production-deps

COPY --from=build /app/node_modules node_modules
RUN yarn workspaces focus --production

FROM setup as production

# Install openssl for Prisma
RUN apt-get update && apt-get install -y openssl
COPY --from=build /app/.keystone .keystone
COPY --from=build /app/schema.graphql /app/schema.prisma ./
COPY --from=production-deps /app/node_modules node_modules
COPY /apps/keystone/migrations migrations
COPY /apps/keystone/package.json package.json

#Cleanup a tiny bit
RUN rm -rf /.keystone/admin/.next/cache

CMD ["yarn", "run", "start"]

fly.toml

//ALMOST EVERYTHING HERE IS OOTB WITH FLY INIT

//Only update is that you need to run the prisma migrate deploy method directly
//Keystone has a CLI method but it doesnt work, and essentially just runs the prisma tool

[deploy]
  release_command = "npx prisma migrate deploy"