undefined | Coder v1 Docs

This guide walks you through configuring TLS on your Coder for Docker deployment using a reverse proxy.

Requirements

A machine with Docker Engine and Docker Compose installed
A domain name
An SSL/TLS certificate

(Optional) Step 1: Validate the LetsEncrypt DNS

If you already have an TLS certificate, you can skip this step.

This step shows you how to get a free TLS certificate for your domain. Your domain must be set up with a supported DNS provider.

Create a docker-compose.yaml file with the code below (make sure that you replace the URL, DNSPLUGIN, and EMAIL variables with the appropriate values):

version: "3"
services:
  letsencrypt:
    image: linuxserver/letsencrypt
    container_name: letsencrypt
    environment:
      - PUID=1000
      - PGID=1000
      - URL=<your-domain.com>
      - SUBDOMAINS=wildcard
      - VALIDATION=dns
      - DNSPLUGIN="<dns-provider>"
      - [email protected]
      - DHLEVEL=4096
    volumes:
      - "~/letsencrypt:/config"
    restart: unless-stopped

Leave the volumes section of the code snippet as-is. Docker will automatically create the ~/letsencrypt folder and populate it with the contents of the container. In this case, the contents will be .ini files for your DNS provider.

Run docker-compose up -d, and navigate to ~/letsencrypt/dns-conf.
Update your DNS provider's .ini file with the requested values.
Restart the container by running docker-compose restart letsencrypt.

You should now see your TLS certificate file in ~/letsencrypt/etc/letsencrypt/live/example.com

Step 2: Configure the Nginx reverse proxy and the Coder container

To properly start the NGINX reverse proxy, you'll need an nginx.conf file present on the host machine.

Create a docker-compose.yaml file if you have not yet done so.
Create an nginx folder in the same directory as your docker-compose.yaml file.
Create an nginx.conf file inside of the nginx directory that includes the following code (make sure that you replace each <your-domain.com> string with your domain):

If you skipped Step 1, replace the ssl_certificate & ssl_certificate_key paths with the path to your certificate files.

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    default_type  application/octet-stream;
    map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

    server {
        listen       80;
        listen  [::]:80;
        server_name  <your-domain.com>;

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }

        location / {
            proxy_pass   http://coder:7080;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }

    server {
        listen       443 ssl;
        server_name  <your-domain.com>;
        ssl_certificate      /letsencrypt/etc/letsencrypt/live/<your-domain.com>/cert.pem;
        ssl_certificate_key  /letsencrypt/etc/letsencrypt/live/<your-domain.com>/privkey.pem;
        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;
        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;
        location / {
            proxy_pass   http://coder:7080;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }

    sendfile        on;
    keepalive_timeout  65;
    proxy_connect_timeout   90;
    proxy_send_timeout      90;
    proxy_read_timeout      90;
}

Add the following code to your docker-compose.yaml file:

nginx:
  container_name: nginx
  hostname: reverse
  image: nginx
  ports:
    - 80:80
    - 443:443
  volumes:
    - "nginx:/etc/nginx"
    - "~/letsencrypt:/letsencrypt/"
coder:
  hostname: coder
  image: codercom/coder:1.27.0
  container_name: coder
  volumes:
    - /var/run/docker.sock:/var/run/docker.sock
    - ~/.coder:/var/run/coder
  ports:
    - 7080:7080
  environment:
    - DEVURL_HOST=*.<your-domain.com>

The ~/letsecnrypt:/letsencrypt/ volume definition is required only if you followed Step 1.

Step 3: Configure and access Coder

Now that NGINX and the Coder containers are configured, run your Docker Compose file:

docker-compose up -d

Finally, in the Coder UI, navigate to Manage > Admin > Infrastructure. and provide your domain name in the Access URL field.

You should now be able to access Coder via your secure domain.

See an opportunity to improve our docs? Make an edit.

On this page