Calling API endpoint inside docker container - docker

Question

I have a small express application running inside a docker container. The endpoint is accessible locally through http://localhost:8888/api/run . The docker container was run using this command:
docker run -dp 8888:8888 code-editor
I configured NGINX to serve the response from docker using the location block:
server {
server_name www.baseURL.tech baseURL.tech;
-------------------CONNECT WITH APP INSIDE DOCKER--------------------
location /compiler {
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://127.0.0.1:8888/;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
-------------------CONNECT WITH MAIN NODE APP--------------------
location / {
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://127.0.0.1:8000/;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
The path being called is https://baseURL/compiler/api/run as an ajax request from the main website https://baseURL but it is returning 404.

Answer 1

You have
location /compiler
which results in Nginx passing on the entire URL, i.e. compiler/api/run to the Express app.
You want it to remove the compiler part and the easiest way to do that is to add a slash at the end of the location, like this
location /compiler/
Then Nginx will only pass on api/run to Express.