Dockerfile.assets

# See scripts/lib.sh create_assets_builder()
# See https://www.kosli.com/blog/how-to-run-your-python-flask-server-inside-a-readonly-docker-container/
FROM node:21.2.0
WORKDIR /app
RUN npm i sass postcss postcss-cli autoprefixer npm-run-all bundle-js --save-dev

# The FROM like should take node:latest which is currently 21.3.0
# However, this breaks the bundle-js command from package.json (on a Mac)
#
#     "bundle-js:js": "bundle-js js/all.js -o js/main.js",
#
# The error I get is...
#
#  node:fs:2352
#    return binding.writeFileUtf8(
#                   ^
#
#Error: ENOENT: no such file or directory, open '/app/js/main.js'
#    at Object.writeFileSync (node:fs:2352:20)
#    at bundle (/app/node_modules/bundle-js/index.js:21:12)
#    at Object.<anonymous> (/app/node_modules/bundle-js/bin/bundle-js.js:31:1)
#    at Module._compile (node:internal/modules/cjs/loader:1376:14)
#    at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
#    at Module.load (node:internal/modules/cjs/loader:1207:32)
#    at Module._load (node:internal/modules/cjs/loader:1023:12)
#    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:135:12)
#    at node:internal/main/run_main_module:28:49 {
#  errno: -2,
#  code: 'ENOENT',
#  syscall: 'open',
#  path: '/app/js/main.js'
#}
#
#Node.js v21.3.0
#ERROR: "bundle-js:js" exited with 1.
#
# This appears to be a known breaking change.
# https://github.com/nodejs/node/issues/50989
# Suggests it will be resolved in node v21.4.0
# (which is not currently released)