Dockerfile

# Install dependencies only when needed
FROM node:16-alpine AS builder
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
RUN apk add --no-cache libc6-compat
WORKDIR /app
COPY . .
RUN yarn set version berry

# If using npm with a `package-lock.json` comment out above and use below instead
# RUN npm ci

ENV NEXT_TELEMETRY_DISABLED 1

# Add `ARG` instructions below if you need `NEXT_PUBLIC_` variables
# then put the value on your fly.toml
# Example:
# ARG NEXT_PUBLIC_EXAMPLE="value here"

RUN yarn

# If using npm comment out above and use below instead
# RUN npm run build

# Production image, copy all the files and run next
# FROM node:16-alpine AS runner
# WORKDIR /app

# ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

# RUN addgroup --system --gid 1001 nodejs
# RUN adduser --system --uid 1001 nextjs

# COPY --from=builder /app ./
RUN yarn install
RUN yarn build
RUN yarn web:prod

CMD ["yarn", "web:prod:serve", "-p", "8080"]

# If using npm comment out above and use below instead
# CMD ["npm", "run", "start"]

fly.toml

# fly.toml file generated for queuepreview-frontend on 2023-03-05T15:13:49-06:00

app = "queuepreview-frontend"
kill_signal = "SIGINT"
kill_timeout = 5
processes = []

[env]
  PORT = "8080"

[experimental]
  auto_rollback = true

[[services]]
  http_checks = []
  internal_port = 8080
  processes = ["app"]
  protocol = "tcp"
  script_checks = []
  [services.concurrency]
    hard_limit = 25
    soft_limit = 20
    type = "connections"

  [[services.ports]]
    force_https = true
    handlers = ["http"]
    port = 80

  [[services.ports]]
    handlers = ["tls", "http"]
    port = 443

  [[services.tcp_checks]]
    grace_period = "1s"
    interval = "15s"
    restart_limit = 0
    timeout = "2s"

fly.yml

# https://fly.io/docs/app-guides/continuous-deployment-with-github-actions/
# https://stackoverflow.com/a/61892639/3875151
# For GH action
name: Fly Deploy NextJS
on:
  push:
    branches:
      - main
    # Pattern matched against refs/tags
    tags:
      - '**' # Push events to every tag including hierarchical tags like v1.0/beta
jobs:
  deploy:
    name: Deploy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: superfly/flyctl-actions/setup-flyctl@master
      - run: flyctl deploy --remote-only
        env:
          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}

gh-action-nextjs.log

2m 27s
Run flyctl deploy --remote-only
==> Verifying app config
--> Verified app config
==> Building image
Waiting for remote builder fly-builder-cold-wind-649...
Remote builder fly-builder-cold-wind-649 ready
==> Creating build context
--> Creating build context done
==> Building image with Docker
--> docker host: 20.10.12 linux x86_64
#1 [internal] load remote build context
Sending build context to Docker daemon  2.479MB

#1 DONE 3.1s

#1 [internal] load remote build context
#1 DONE 0.0s

#2 copy /context /
#2 DONE 0.1s

#3 [internal] load metadata for docker.io/library/node:16-alpine
#3 DONE 0.3s

#4 [1/8] FROM docker.io/library/node:16-alpine@sha256:95a849eafc573ad0d972fd67c569369e7aa94d55a21ede3b972e3137e5f8e43a
#4 DONE 0.0s

#5 [2/8] RUN apk add --no-cache libc6-compat
#5 CACHED

#6 [3/8] WORKDIR /app
#6 CACHED

#7 [4/8] COPY . .
#7 DONE 0.1s

#8 [5/8] RUN yarn
#8 1.137 ➤ YN0000: ┌ Resolution step
#8 1.751 ➤ YN0000: └ Completed in 0s 613ms
#8 1.752 ➤ YN0000: ┌ Fetch step
#8 108.3 ➤ YN0000: └ Completed in 1m 47s
#8 108.4 ➤ YN0000: ┌ Link step
#8 127.6 ➤ YN0007: │ turbo@npm:1.7.0 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.14.47 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.16.17 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.17.5 must be built because it never has been before or the last one failed
#8 128.0 ➤ YN0007: │ queuepreview@workspace:. must be built because it never has been before or the last one failed
#8 128.0 ➤ YN0007: │ vercel@npm:28.13.1 must be built because it never has been before or the last one failed
#8 137.7 ➤ YN0009: │ queuepreview@workspace:. couldn't be built successfully (exit code 1, logs can be found here: /tmp/xfs-36c8d29c/build.log)
#8 137.7 ➤ YN0000: └ Completed in 29s 280ms
#8 138.0 ➤ YN0000: Failed with errors in 2m 17s
#8 ERROR: executor failed running [/bin/sh -c yarn]: exit code: 1
------
 > [5/8] RUN yarn:
#8 108.4 ➤ YN0000: ┌ Link step
#8 127.6 ➤ YN0007: │ turbo@npm:1.7.0 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.14.47 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.16.17 must be built because it never has been before or the last one failed
#8 127.6 ➤ YN0007: │ esbuild@npm:0.17.5 must be built because it never has been before or the last one failed
#8 128.0 ➤ YN0007: │ queuepreview@workspace:. must be built because it never has been before or the last one failed
#8 128.0 ➤ YN0007: │ vercel@npm:28.13.1 must be built because it never has been before or the last one failed
#8 137.7 ➤ YN0009: │ queuepreview@workspace:. couldn't be built successfully (exit code 1, logs can be found here: /tmp/xfs-36c8d29c/build.log)
#8 137.7 ➤ YN0000: └ Completed in 29s 280ms
#8 138.0 ➤ YN0000: Failed with errors in 2m 17s
------
Error failed to fetch an image or build from source: error building: executor failed running [/bin/sh -c yarn]: exit code: 1