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Using SWAG as Reverse Proxy

Note: This is contributed content.

To make the setup of a Reverse Proxy much easier, Linuxserver.io developed SWAG
SWAG - Secure Web Application Gateway (formerly known as letsencrypt, no relation to Let's Encrypt™) sets up an Nginx web server and reverse proxy with PHP support and a built-in certbot client that automates free SSL server certificate generation and renewal processes (Let's Encrypt and ZeroSSL). It also contains fail2ban for intrusion prevention.

Step 1: Get a domain

The first step is to grab a dynamic DNS if you don't have your own subdomain already. You can get this from for example DuckDNS.

Step 2: Set-up SWAG

Then you will need to set up SWAG, the variables of the docker-compose are explained on the Github page of SWAG. This is an example of how to set it up using duckdns and docker-compose.

docker-compose.yml

version: "2.1"
services:
 swag:
 image: ghcr.io/linuxserver/swag
 container_name: swag
        cap_add:
        - NET_ADMIN
    environment:
        - PUID=1000
        - PGID=1000
        - TZ=Europe/Brussels
        - URL=<mydomain.duckdns>
        - SUBDOMAINS=wildcard
        - VALIDATION=duckdns
        - CERTPROVIDER= #optional
        - DNSPLUGIN= #optional
        - DUCKDNSTOKEN=<duckdnstoken> 
        - EMAIL=<e-mail> #optional
        - ONLY_SUBDOMAINS=false #optional
        - EXTRA_DOMAINS=<extradomains> #optional
        - STAGING=false #optional
        volumes:
        - /etc/config/swag:/config
        ports:
        - 443:443
        restart: unless-stopped

Don't forget to change the mydomain.duckns into your personal domain and the duckdnstoken into your token and remove the brackets.

Step 3: Change the config files

Navigate to the config folder of SWAG and head to proxy-confs. If you used the example above, you should navigate to: /etc/config/swag/nginx/proxy-confs/ . There are a lot of preconfigured files to use for different apps such as radarr,sonarr,overseerr,...

To use the bundled configuration file, simply rename photoprism.subdomain.conf.sample in the proxy-confs folder to photoprism.subdomain.conf. Alternatively, you can create a new file photoprism.subdomain.conf in proxy-confs with the following configuration:

photoprism.subdomain.conf

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name photoprism.*;

    include /config/nginx/ssl.conf;

    client_max_body_size 0;

    location / {
        include /config/nginx/proxy.conf;
        resolver 127.0.0.11 valid=30s;
        set $upstream_app photoprism;
        set $upstream_port 2342;
        set $upstream_proto http;
        proxy_pass $upstream_proto://$upstream_app:$upstream_port;
        }

}   

Step 4: Port-forward port 443

Since SWAG allows you to set up a secure connection, you will need to open port 443 on your router for encrypted traffic. This is way more secure than port 80 for http.

Step 5: Restart SWAG

When you change anything in the config of Nginx, you will need to restart the container using docker restart swag. If everything went well, you can now access photoprism on the subdomain you configured: photoprism.mydomain.duckdns.org

Attention

The docker-container of photoprism won't be named "photoprism", it will be "name_photoprism". To check this, execute docker ps and check wether it is named "photoprism". If it's not, go to your docker-compose file and add the following line to photoprism below 'image' container_name=photoprism. Restart swag afterwards. Keep in mind to not have two photoprism containers with the same name! You could also change the config file of Swag with the right name in the proxy-confs directory.