Docker on Linux connect to localhost through host.docker.internal with specific port

Question

I have an issue reaching my local machine from a docker container. It is created with Laravel sail like this:

laravel.test:
        build:
            context: ./vendor/laravel/sail/runtimes/8.1
            dockerfile: Dockerfile
            args:
                WWWGROUP: '${WWWGROUP}'
        image: sail-8.1/app
        extra_hosts:
            - 'host.docker.internal:host-gateway'
        ports:
            - '${APP_PORT:-80}:80'
        environment:
            WWWUSER: '${WWWUSER}'
            LARAVEL_SAIL: 1
            XDEBUG_MODE: '${SAIL_XDEBUG_MODE:-off}'
            XDEBUG_CONFIG: '${SAIL_XDEBUG_CONFIG:-client_host=host.docker.internal}'
        volumes:
            - '.:/var/www/html'
        networks:
            - sail
        depends_on:
            - mysql
            - redis
            - meilisearch
            - selenium

And this is the network config:

networks:
    sail:
        driver: bridge

When I login to the container: docker-compose exec laravel.test sh

And run: curl host.docker.internal I get a response.

But like this: curl host.docker.internal:8000 I get: curl: (7) Failed to connect to host.docker.internal port 8000: Connection refused.

How do I have port forwarding while connecting to my local maching?

I seen I should use "host" as the driver for the network, but that doesn't work at all.

Result of docker ps

9e6716ad920e   sail-8.1/app                  "start-container"        3 hours ago   Up 3 hours             8000/tcp, 0.0.0.0:8080->80/tcp, :::8080->80/tcp                                        integrationproxy_laravel.test_1
a2e8e4b31536   selenium/standalone-chrome    "/opt/bin/entry_poin…"   3 hours ago   Up 3 hours             4444/tcp, 5900/tcp                                                                     integrationproxy_selenium_1
874d8b620bb4   mysql/mysql-server:8.0        "/entrypoint.sh mysq…"   3 hours ago   Up 3 hours (healthy)   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060-33061/tcp                             integrationproxy_mysql_1
5bdcd577ac54   redis:alpine                  "docker-entrypoint.s…"   3 hours ago   Up 3 hours (healthy)   0.0.0.0:6379->6379/tcp, :::6379->6379/tcp                                              integrationproxy_redis_1
878eb11c9a13   getmeili/meilisearch:latest   "tini -- /bin/sh -c …"   3 hours ago   Up 3 hours (healthy)   0.0.0.0:7700->7700/tcp, :::7700->7700/tcp                                              integrationproxy_meilisearch_1
a94a0ccf3741   mailhog/mailhog:latest        "MailHog"                3 hours ago   Up 3 hours             0.0.0.0:1025->1025/tcp, :::1025->1025/tcp, 0.0.0.0:8025->8025/tcp, :::8025->8025/tcp   integrationproxy_mailhog_1

i suppose APP_PORT =8080? your docker container has the 8080 port open, not your local machine... aka, that port that you are specifying is for incoming request, not outgoing requests... Connection refused is due to the fact that your "local pc" has the port 8080 closed — Alberto Sinigaglia, Mar 26 '22 at 10:32
Try looking at https://stackoverflow.com/a/61001152/418599 ... — Antonio Petricca, Mar 26 '22 at 10:37
@AlbertoSinigaglia Like this? `ports: - '8080:80'` . That doesn't work. — Dion Snoeijen, Mar 26 '22 at 10:45
@AntonioPetricca This is not talking about ports specifically. — Dion Snoeijen, Mar 26 '22 at 10:45
So to be clear, the connection refused problem only arises when I try to access a specific port. In this case 8000. — Dion Snoeijen, Mar 26 '22 at 10:49
From `8000/tcp, 0.0.0.0:8080->80/tcp`, we can see `8080` is forwarded to `80`. But where is `8000` forwarded to ? — Philippe, Mar 26 '22 at 13:50
Hmm, I feel noobish here. So looking at my docker-compose file, which is some laravel default setup. Where is 8080 even defined? And how would I forward 8000? It's not obvious to me at all. — Dion Snoeijen, Mar 28 '22 at 06:58
This isn't working: '8000:8000'. While starting the containers it says port 8000 is already in use. (The application I have running locally and want access to from the container is running on that port) — Dion Snoeijen, Mar 28 '22 at 07:36
Run `netstat -anp | grep 8000` as root to see what process is listening on it. — Philippe, Mar 28 '22 at 10:45
This one :). As I expect: tcp 0 0 127.0.0.1:8000 0.0.0.0:* LISTEN 38508/php — Dion Snoeijen, Mar 28 '22 at 14:33

Docker on Linux connect to localhost through host.docker.internal with specific port

0 Answers0