Comment by Rich Bernhardt on "🐳 Docker with Strapi V4 🌟" | Hashnode

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Rich Bernhardt

Jul 12, 2022

Hi Simen

Many thanks for this post.

Just one question. I've tried to change the port number with no success. Have you ever managed to serve dockerized strapi v4 on a port other than 1337? If so, have you employed anything else on top of the below settings?

.env

PORT=3024

docker-compose.yml

    ...
    ports:
      - "${PORT}:${PORT}"
    ...

I've changed both side of the ports' config as strapi runs on the port set in .env.

Following start strapi, the login panel shows up, but clicking the log in button returns with internal server error (500).

Simen Daehlin

Coding made easy

Jul 12, 2022

Hello Rich Bernhardt 👋 So I have many times, it really depends how you setup the project.

If you are ONLY using the Dockerfile and not docker compose, you will need to change the .env and also expose the correct port in Dockerfile under EXPOSE.

IF you are using docker-compose you still need to PASS port into as a variable, as I don't think the file is doing it

...
 environment:
      PORT:   ${PORT}
port:
  - "${PORT}:${PORT}"

Else docker-compose won't have access to the environmental variable etc. In docker-compose I also normally then just do

port:
  - "${PORT}:1337"

That way I can control it what the OUT port is and not what strapi uses by default I just proxy it to my own port.

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