Can I use docker, supabase etc on a shared hosting server?

[bbunlock]

Hi everyone, first thanks for taking the time to read this.

I have had a dedicated server for hosting sites for about 15 years (various servers) and I have had no major issues BUT lately I have been working on things other than the standard web sites and have been looking into using docker, supabase, coolify etc as I am now starting to build mobile apps.

The problem I am now having is that I have never had to bother learning anything about DNS, proxy, ports etc as I just relied on the hosting control panel to take care of it (cPanel, DirectAdmin) but im now finding out this is very much needed if I want to use things like portainer and docker.

I have been pulling my hair out (what little I have left) for the last week trying to get things working but im always getting stuck on the DNS, Proxy, Ports side of things and im starting to think it might not be possible with my current setup SO my question is this

On a server using AlmaLinux, that is currently setup and working as the bog standard LAMP shared hosting server (linux, apache, mysql, php) using the standard ports 80, 443 22 etc is it possible to have both these types of environments working together on the same server?

The main web server is currently nginx_apache but that can be changed to apache, nginx or nginx_apache.

I am really struggling to get this working with the DNS, Proxy and ports, I wish I learned more about them.

Im happy to provide any other information regarding the server and its setup if that helps.

Also wanted to say that I came here through this amazing video tom uploaded to youtube

Nginx Proxy Manager Docker

The compose file used in the Nginx Proxy Manager video for setting up with docker volumes version: "3.9" services: nginx-proxy-manager: image: jc21/nginx-proxy-manager:latest container_name: nginx-proxy-manager ports: - "80:80" - "443:443" - "81:81" volumes: - npm_data:/data - npm_letsencrypt:/etc/letsencrypt restart: unless-stopped volumes: npm_data: npm_letsencrypt: Docker Compose for setting up with bind mounts version: "3.9" serv…

Kind regards

Wayne

[Louie1961]

Yes its quite possible but you are going to need to get smart on networking just a little bit. You would probably want to put your reverse proxy on some unique ports, perhaps 8080 and 8443 instead of 80 and 443. The outside ports are on the left side of the colon. So it would look like 8080:80 and 8443:443. You are essentially mapping new ports so you won’t have conflicts with your existing port assignments. 8080 tells NPM to listen on port 8080 and route those requests to port 80 inside the docker container.

Once you have NPM up and running, you will want to have domain names for all of the services you put behind NPM. This way you can give each of them SSL certificates using a DNS challenge. NPM will rout incoming requests to the correct docker container based on the domain name, but its not automatic, you will need to set up proxy host mappings inside of NPM, then it will happen automatically for the ones you set up.

By the way I don’t think you need to change any of your current setup. Just install docker and docker compose, and perhaps something like Portainer, along side your current stack. Once you do that you can install the reverse proxy of your choice in docker (NPM, Nginx, Taefik, etc.) as a docker container.

How is the server connecting the internet? You may need another public IP address that points to your docker setup. Or you can use a tunnel like cloudflare.

[bbunlock]

Hi Louie1961 thank you for the information, I currently have my server setup as follows

apache is listening on port 8080 and for ssl 8081, I got this info from my httpd.conf and httpd-ssl.conf files, nginx is running the 80 and 443, I get this from the /usr/local/directadmin/data/users/username/nginx.conf file that each site has

The server has 5 ip addresses, 1 (the main one) is being used for the shared ip for the websites, 2 are being used for my nameservers and I have 2 spare ip addresses however I have no idea how to assign that to docker?

I currently have docker installed, I also have coolify installed and working via servers main ip address and port 8000

I would like to use my site that is hosted on the server as the main domain for the various endpoints such as npm.mysite.com, coolify.mysite.com, I have a wildcard setup on the DNS as 2 A records (@ and *) pointing to my server ip.

The good news is that I am just starting on the mobile dev side of things so its not like im in a hurry, I can take my time to get it sorted (if its possible), if something doesnt work no big deal, try something else.

Any further advice would be very much appreciated

Kind regards

Wayne