How to reverse proxy

[wildland7752]

Hi there, I want to hace my app reverse proxied using default swag config and it returns with 502 bad gateway. Please tell me how to do it properly or anything i need to change. I tried both subfolder and subfile, nothing works. I have gone through your readme so many times, there is no mention of path url? am I missing something?

[jlesage]

Can you share the config you are currently using ? I think it would be a good starting point to try to see what is wrong.

[wildland7752]

## Version 2023/02/05
# REMOVE THIS LINE BEFORE SUBMITTING: The structure of the file (all of the existing lines) should be kept as close as possible to this template.
# REMOVE THIS LINE BEFORE SUBMITTING: Look through this file for <tags> and replace them. Review other sample files to see how things are done.
# REMOVE THIS LINE BEFORE SUBMITTING: The comment lines at the top of the file (below this line) should explain any prerequisites for using the proxy such as DNS or app settings.
# make sure that your <container_name> container is named <container_name>
# make sure that <container_name> is set to work with the base url /<container_name>/


location /slideshow {
    return 301 $scheme://$host/slideshow/;
}

location ^~ /slideshow/ {
    # enable the next two lines for http auth
    auth_basic "Restricted";
    auth_basic_user_file /config/nginx/slideshow.htpasswd;

    # enable for ldap auth (requires ldap-server.conf in the server block)
    #include /config/nginx/ldap-location.conf;

    # enable for Authelia (requires authelia-server.conf in the server block)
    #include /config/nginx/authelia-location.conf;

    # enable for Authentik (requires authentik-server.conf in the server block)
    #include /config/nginx/authentik-location.conf;

    include /config/nginx/proxy.conf;
    include /config/nginx/resolver.conf;
    set $upstream_app slideshow;
    set $upstream_port 5800;
    set $upstream_proto http;
    proxy_pass $upstream_proto://$upstream_app:$upstream_port;
}

# REMOVE THIS LINE BEFORE SUBMITTING: Some proxies require one or more additional location blocks for things like API or RPC endpoints.
# REMOVE THIS LINE BEFORE SUBMITTING: If the proxy you are making a sample for does not require an additional location block please remove the commented out section below.
# location ^~ /<container_name>/api {
#     include /config/nginx/proxy.conf;
#     include /config/nginx/resolver.conf;
#     set $upstream_app <container_name>;
#     set $upstream_port <port_number>;
#     set $upstream_proto <http or https>;
#     proxy_pass $upstream_proto://$upstream_app:$upstream_port;
#
#     # REMOVE THIS LINE BEFORE SUBMITTING: Additional proxy settings such as headers go below this line, leave the blank line above.
# }

[wildland7752]

Note I had auth on and off and tested it and still nothing. I get the page to put in my username and pass, so it must be working but after I put my details getting that error. I used this template from swag folder. link for same thing is here: https://github.com/linuxserver/reverse-proxy-confs/blob/master/_template.subfolder.conf.sample

[spiritLHLS]

From

https://github.com/oneclickvirt/dockerfile-templates/tree/main/idea

and

https://github.com/jlesage/docker-crashplan-pro?tab=readme-ov-file#routing-based-on-url-path

I want to use a custom path for reverse proxy access to a container based on the jlesage/baseimage-gui:ubuntu-22.04-v4 base image, instead of using the default root path /

• Use NGINX as a reverse proxy to map the IDEA plugin container’s service to the path /ide/
• Avoid exposing the IDEA container’s port directly to the public network
• Use Docker custom network to enable inter-container communication

Create a custom network named web-net to enable communication between containers:

docker network create web-net

Start the IDEA container without exposing any ports, connect it to the web-net network (the container's web port is set to 31000 at the Dockerfile stage):

docker run -d \
  --name idea \
  --network web-net \
  jetbrains-idea-plug-cuda:v2024.2.5

Create a file named default.conf in the current directory with the following content:

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

upstream idea_app {
    # Use the reachable container name for reverse proxy
    server idea:31000;
}

server {
    listen       80;
    server_name  _;

    location = /ide {
        return 301 $scheme://$http_host/ide/;
    }

    location /ide/ {
        rewrite ^/ide(/.*)$ $1 break;

        proxy_pass http://idea_app/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_read_timeout 86400;
    }
}

Create a file named Dockerfile in the current directory with the following content:

FROM nginx:alpine

COPY default.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]

Build the custom NGINX image and run the container, connect it to the web-net network, and map port 80 of the container to port 31000 on the host:

docker build -t custom-nginx-proxy .
docker run -d \
  --name nginx-proxy \
  --network web-net \
  -p 0.0.0.0:31000:80 \
  custom-nginx-proxy

Now can access the service via http://<host-ip>:31000/ide/

Here's my solution, not sure if it meets OP needs.