Docker error: [Error: EISDIR: illegal operation on a directory, read]

[ThatOneCalculator]

Following the server instructions, getting this error:

Note that this is a docker only problem, npm start works fine.

➜  metrics git:(master) ✗ docker run --entrypoint="" -p=127.0.0.1:$PUBLISHED_PORT:$SERVICE_PORT --volume=$SETTINGS:/metrics/settings.json ghcr.io/lowlighter/metrics:$VERSION npm start

> metrics@3.19.0 start
> node source/app/web/index.mjs

metrics/setup > setup
metrics/setup > load settings.json
node:internal/process/promises:246
          triggerUncaughtException(err, true /* fromPromise */);
          ^

[Error: EISDIR: illegal operation on a directory, read] {
  errno: -21,
  code: 'EISDIR',
  syscall: 'read'
}

Node.js v17.3.1

[lowlighter]

Hi!

I was indeed able to reproduce:

@lowlighter ➜ /workspaces/metrics (master) $ docker run --entrypoint="" -p=127.0.0.1:3000:3000 --volume=settings.example.json:/metrics/settings.json ghcr.io/lowlighter/metrics:latest npm start
Unable to find image 'ghcr.io/lowlighter/metrics:latest' locally
latest: Pulling from lowlighter/metrics
a2abf6c4d29d: Pull complete 
716b0e096692: Pull complete 
fe6faad74785: Pull complete 
210ec5508c76: Pull complete 
c0598cf3675c: Pull complete 
5c38cbe9d616: Pull complete 
cc5670e9a23e: Pull complete 
Digest: sha256:0f04faaff324abead388332ef5370af42231dad06e108f6dde9922fe9315abd6
Status: Downloaded newer image for ghcr.io/lowlighter/metrics:latest

> metrics@3.19.0 start
> node source/app/web/index.mjs

metrics/setup > setup
metrics/setup > load settings.json
node:internal/process/promises:246
          triggerUncaughtException(err, true /* fromPromise */);
          ^

[Error: EISDIR: illegal operation on a directory, read] {
  errno: -21,
  code: 'EISDIR',
  syscall: 'read'
}

Node.js v17.3.1

But by any-chance, is your $SETTINGS path a relative path ?

Running the exact same command but with $PWD in --volume seems to fix it:

@lowlighter ➜ /workspaces/metrics (master ✗) $ docker run --entrypoint="" -p=127.0.0.1:3000:3000 --volume=$PWD/settings.example.json:/metrics/settings.json ghcr.io/lowlighter/metrics:latest npm start

> metrics@3.19.0 start
> node source/app/web/index.mjs

metrics/setup > setup
metrics/setup > load settings.json
metrics/setup > load settings.json > success