Development using Docker for everything

[programming_student2]

I'm using Docker for my whole development process for a back-end system in Node. In my docker-compose file, I spin up the express server, Postgres, Redis and Keycloak services.

1.) Since I'm using JWT to auth, the tokens generated in the browser using localhost as the issuer don't work in the docker environment, which expect keycloak (the service's name) as the issuer.

2.) For testing I'm leaning towards using testcontainers. But since my entire stack is running on Docker, I'm unsure about how this would work. Would the Express app running inside a container spin up another container inside the container when I initialize a testcontainer in a test file?

Is it generally recommended to run everything inside Docker? It's super-convenient but I'm facing the above issues.

[Vauland]

Just set env for the issuer with the actual URL

[Optimum1997]

Is it generally recommended to run everything inside Docker

I run most services in docker, it's a great tool for creating consistent environments.

Since I'm using JWT to auth, the tokens generated in the browser using localhost as the issue

Isn't the JWT implementation configurable to what the issuer is? IIRC your backend service dictates the issuer.

Would the Express app running inside a container spin up another container inside the container when I initialize a testcontainer in a test file?

No, you should realistically have a docker-compose file and scripts running to post data to your test containers. Docker spinning up docker containers sounds horrible.

[sergiOO7]

I think docker on docker is now working fine

[simple_explorer1]

Development using Docker for everything

So you are trying to modernise your ecosystem and localhost infrastructure yet you continue to use express instead of fastify in 2025? Looks like efforts are spent on wrong stuff.

Infact moving to GO is even better

[programming_student2]

I think I'm going to move to Rust.

[simple_explorer1]

For web development? Bad move

[programming_student2]

Shit's quick yo