Railway•7mo ago

Docker deployment custom start command

I am trying to start the Docker image with additional parameters like this: ./packages/cli/bin/app.js daemon --api http://myapp.railway.internal The config file seems to be adding a semicolon at the end of the URL "http://myapp.railway.internal"; which is then invalid JSON format, like below:

"data": {
  "mode": "remote",
  "host": "http://myapp.railway.internal";,

"data": {
  "mode": "remote",
  "host": "http://myapp.railway.internal";,

} Is there a way to prevent that or a workaround when using custom start commands? When running the Docker image locally / server / k8s it works as expected.

Solution:

with simple code that prints each arg out, i was not able to reproduce this

process.argv.forEach(arg => console.log(arg));

process.argv.forEach(arg => console.log(arg));

this is something the code is adding, further proven by the semicolon appearing outside of the double quotes, if this was railway adding a semicolon to the last argument thats passed in you would see that semicolon appear within the double quotes...

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6 Replies

Percy•7mo ago

Project ID: N/A

Marko•7mo ago

N/A

Brody•7mo ago

interesting, I've never seen this issue before, but try wrapping that command in a shell like so

/bin/sh -c "./packages/cli/bin/app.js daemon --api $RAILWAY_PUBLIC_DOMAIN"

/bin/sh -c "./packages/cli/bin/app.js daemon --api $RAILWAY_PUBLIC_DOMAIN"

also used $RAILWAY_PUBLIC_DOMAIN since that's a variable thats automatically available to the deployment and will either evaluate to the service's railway domain or a custom domain if applicable so there's no need to hardcode your domain in the start command

Marko•7mo ago

seems to be still adding the ; at the end for some reason

Brody•7mo ago

I don't have quite the time to try to reproduce this right now, so... chuck in a string trim instead?

Solution

Brody•7mo ago

with simple code that prints each arg out, i was not able to reproduce this

process.argv.forEach(arg => console.log(arg));

process.argv.forEach(arg => console.log(arg));

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Docker deployment custom start command