[SOLVED] ENONENT when executing shell script in Docker container

ENONENT when executing shell script in Docker container

I am using node:12-alpine with a NodeJS backend calling ShellJS spawn command. It is supposed to run the shell script and I have verified and tested that it works locally. However, it is showing this error when it is running in the Docker container.

I have also verified that the script exists in the folder using docker exec.

Do I need to configure in alpine for this to work?

This is the command that ShellJS is calling: source execute.sh

Error: spawn /usr/src/app/scripts/execute.sh ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
    at onErrorNT (internal/child_process.js:469:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
Emitted 'error' event on ChildProcess instance at:
    at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
    at onErrorNT (internal/child_process.js:469:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  errno: 'ENOENT',
  code: 'ENOENT',
  syscall: 'spawn /usr/src/app/scripts/execute.sh',
  path: '/usr/src/app/scripts/execute.sh',

Solution

If you would like to use shell scripts in alpine you have to install a package called bash. It happens because alpine does not have a bash.

Alpine comes with ash as the default shell instead of bash.

Here is an example to install bash in you alpine image.

Dockerfile

FROM alpine:latest
RUN apk add --update \
nodejs \
nodejs-npm \
bash && rm -rf /var/cache/apk/*
# ...