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I'm having trouble understanding how to view my docker container via my droplet IP

Posted April 30, 2019 2.5k views
ApachePHPGetting StartedDockerInitial Server Setup

I’m simply trying to view my app in a browser via the IP address. I’m new to docker. I’ve spent a fair amount of time today trying to figure this out, but need a little help.

I have a docker container locally running a silverstripe app. Ive set this container up on a droplet using the marketplace/docker image. The app seems to all be setup and running as it should.

I have a docker-compose.yml file - the top looks like this:

version: "3.5"
services:
  myname-www:
    build:
      context: .docker/www
      dockerfile: Dockerfile
    container_name: myname-www
    ports:
      - "${WWW_HTTP_PORT}:80"
      - "${WWW_HTTPS_PORT}:443"

this is sitting in the project folder: /var/myname

and in an .env file I have these lines:

# Docker Configuration
WWW_HTTP_PORT=2375
WWW_HTTPS_PORT=2376

I’ve got those port numbers from this install page:
https://marketplace.digitalocean.com/apps/docker

I have setup a firewall in my control panel:
HTTP TCP 80
HTTPS TCP 443

but I’m still getting a 404 - nginx/1.10.3 (Ubuntu) page.

Any help would be appreciated. thanks.

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racingsparrow
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racingsparrow

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1 answer
jarland April 30, 2019

Greetings!

It looks like you might be trying to expose the docker container to the docker daemon ports. You also may have an existing install of Nginx that you have running. If you intend to expose your app directly to web ports, you may also want to disable/remove the Nginx installation that is running.

Make sure that your ports are mapping to the ones that you want. So if the internal port were 81 and you want the external port to be 80, it’s “80:81” when spinning up the container. In your case it’s probably just “80:80” but I wanted to show that it’s “exposed:source” when mapping.

To give you some insight into my world and how I expose containers, I have a copy of searx running with this command:

docker run -d -p 82:8888 wonderfall/searx

Then I have Caddy running a reverse proxy (maybe you intend to use Nginx) with this config:

search.jar.land {
        tls jarland@gmail.com
        proxy / http://127.0.0.1:82 {
                transparent
        }
}

You can see it exposed at search.jar.land. Hopefully that helps :)

Jarland

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