Dockerize Node app without installing or linking node_modules.

.dockerignore

**/node_modules/**
**/.git/**
**/dist/**

develop.sh

#!/usr/bin/env bash

# scripts/develop.sh

set -euxo pipefail

args="$*"

restart_server() {
  echo "Starting development server..."
  pkill -fi "start:dev" || true

  yarn start:dev &
}

configure_watches() {
  echo "Configuring watches..."

  /usr/local/bin/watchman watch /app

  for j in scripts/watchman/*.json; do
    echo "Setting watch $j"
    watchman -j <"$j"
  done
}

watch_watchman() {
  tail -f /usr/local/var/run/watchman/root-state/log
}

yarn_install() {
  echo "Running yarn install..."
  /usr/local/bin/yarn install
}

case $args in
serve)
  restart_server
  ;;

watch)
  yarn_install
  restart_server
  watch_watchman
  ;;

watches)
  configure_watches
  ;;

yarn)
  yarn_install
  restart_server
  ;;

*)
  echo "Unknown command: $args"
  ;;
esac

docker-compose.yml

version: "3.8"

services:
  app:
    build:
      context: .
    ports:
      - "3000:3000"
    init: true
    volumes:
      - type: bind
        source: .
        target: /app
      - type: volume
        source: node_modules
        target: /app/node_modules


volumes:
  node_modules:

Dockerfile

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Watchman Builder ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #
FROM alpine:3.9 AS watchman

RUN apk add --no-cache \
  autoconf \
  automake \
  bash \
  build-base \
  libcrypto1.1 \
  libgcc \
  libstdc++ \
  libtool \
  linux-headers \
  openssl-dev \
  python3-dev

ENV WATCHMAN_VERSION=4.9.0 \
  WATCHMAN_SHA256=1f6402dc70b1d056fffc3748f2fdcecff730d8843bb6936de395b3443ce05322

RUN cd /tmp \
  && wget -O watchman.tar.gz "https://github.com/facebook/watchman/archive/v${WATCHMAN_VERSION}.tar.gz" \
  && echo "$WATCHMAN_SHA256 *watchman.tar.gz" | sha256sum -c - \
  && tar -xz -f watchman.tar.gz -C /tmp/ \
  && rm -rf watchman.tar.gz

RUN cd /tmp/watchman-${WATCHMAN_VERSION} \
  && ./autogen.sh \
  && ./configure --enable-lenient \
  && make \
  && make install \
  && cd $HOME \
  && rm -rf /tmp/*

RUN strip /usr/local/bin/watchman

# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ App ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #
FROM node:18-alpine AS app

COPY --from=watchman /usr/local/bin/watchman* /usr/local/bin/
COPY --from=watchman /usr/local/var/run/watchman /usr/local/var/run/watchman

RUN apk add --no-cache bash git \
  && mkdir -p /usr/local/var/run/watchman

ENV PATH="/app/node_modules/.bin:$PATH"
WORKDIR /app

COPY scripts/develop.sh ./scripts/develop.sh
COPY scripts/watchman ./scripts/watchman

RUN ./scripts/develop.sh watches

CMD ["./scripts/develop.sh", "watch"]

server-restart.jsonc

// scripts/watchman/server-restart.json

[
  "trigger",
  "/app",
  {
    "name": "server-restart",
    "expression": [
      "anyof",
      [
        "name",
        "vite.config.ts"
      ],
      [
        "name",
        "index.html"
      ]
    ],
    "command": [
      "./scripts/develop.sh",
      "serve"
    ],
    "append_files": false
  }
]

watchman-reboot.jsonc

// scripts/watchman/watchman-reboot.json

[
  "trigger",
  "/app",
  {
    "name": "watchman-reboot",
    "expression": [
      "dirname",
      "scripts/watchman"
    ],
    "command": [
      "./scripts/develop.sh",
      "watches"
    ],
    "append_files": false
  }
]

yarn-install.jsonc

// scripts/watchman/yarn-install.jsonc

[
  "trigger",
  "/app",
  {
    "name": "yarn-install",
    "expression": [
      "name",
      "yarn.lock"
    ],
    "command": [
      "./scripts/develop.sh",
      "yarn"
    ],
    "append_files": false
  }
]