Hi, I’m new to using docker on servers, I have only used it for local development. I am working on a project that the server has nginx installed on it, and also some containers running with docker-compose.
I have created a container for running a laravel application and mapped it to port 8000. When setting up nginx, I have set the domain as a frontend, and the port 8000 will be a backend API. Whenever I access the frontend it works correctly. The problem is when I try to access the docker container, it always returns an error ERR_CONNECTION_TIMED_OUT. I have added a subdomain for this container.
this is the nginx configuration:
server {
listen 80;
listen [::]:80;
server_name api.site; # ommited the real site.
location / {
proxy_pass http://127.0.0.1:8000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
this is how I created the docker-compose.prod.yml file. There is a compose for production and another one for local dev. The local dev has a nginx service inside of it and it is working fine. The production I didn’t add it because I think it doesn’t need because of the already running nginx on the vps. I don’t know if this thinking is right or not.
volumes:
db-laravel: ~
networks:
laravel:
driver: bridge
services:
# Application service
app.laravel:
container_name: app.laravel
build:
context: .
dockerfile: ./docker/Dockerfile.prod
args:
- PHP_VERSION=8.3.9-fpm
restart: unless-stopped
tty: true
environment:
- SERVICE_NAME=app.laravel
- SERVICE_TAGS=dev
volumes:
- .:/var/www/app
- ./docker/php/local.ini:/usr/local/etc/php/conf.d/local.ini
working_dir: /var/www/app
depends_on:
- db.laravel
networks:
- laravel
ports:
- "${APP_PORT:-8000}:80"
# Database service
db.laravel:
container_name: db.laravel
image: mysql:9.0
restart: unless-stopped
tty: true
ports:
- '${FORWARD_DB_PORT:-3306}:3306'
environment:
- MYSQL_DATABASE=${DB_DATABASE}
- MYSQL_USER=${DB_USERNAME}
- MYSQL_PASSWORD=${DB_PASSWORD}
- MYSQL_ROOT_PASSWORD=${DB_PASSWORD}
- MYSQL_ROOT_HOST=%
- SERVICE_NAME=db.laravel
- SERVICE_TAGS=dev
volumes:
- db-laravel:/var/lib/mysql
- ./mysql/my.cnf:/etc/mysql/my.cnf
networks:
- laravel
This is the Dockerfile for the app.laravel service:
# Versão da imagem Docker PHP
ARG PHP_VERSION
FROM php:${PHP_VERSION} as php
# Seta o Working dir
WORKDIR /var/www/app
# apt-utils é um extensão de recursos do gerenciador de pacotes APT
RUN apt-get update -y && apt-get install -y --no-install-recommends \
apt-utils \
supervisor
# Dependências recomendadas de desenvolvido para ambiente linux
RUN apt-get update && apt-get install -y \
zlib1g-dev \
libzip-dev \
unzip \
libpng-dev \
libjpeg-dev \
libfreetype6-dev \
libpq-dev \
libxml2-dev \
curl \
libcurl4 \
libcurl4-openssl-dev \
nano \
git \
build-essential \
locales \
libicu-dev \
libonig-dev
# Instala dependências PHP
RUN docker-php-ext-configure gd --with-freetype --with-jpeg
RUN docker-php-ext-install -j$(nproc) \
gettext \
gd \
zip \
iconv \
pcntl \
fileinfo \
simplexml \
mysqli \
pdo \
pdo_mysql \
bcmath \
xml \
session
# Copia configs do php.ini
RUN cp /usr/local/etc/php/php.ini-production /usr/local/etc/php/php.ini
# Instala Composer
RUN cd /tmp \
&& curl -sS https://getcomposer.org/installer -o composer-setup.php \
&& php composer-setup.php --install-dir=/usr/local/bin --filename=composer \
&& rm composer-setup.php
# Configura arquivos do supervisor
# COPY ./supervisord/supervisord.conf /etc/supervisor
# COPY ./supervisord/conf /etc/supervisord.d/
# Limpa instalação
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Adiciona novo usuário
RUN groupadd -g 1000 www
RUN useradd -u 1000 -ms /bin/bash -g www www
# Copia o diretório
COPY . /var/www/app
# Seta permissões
COPY --chown=www:www . /var/www/app
# Muda usuário atual
USER www
# Expõe a porta
EXPOSE 9000
# Executa comandos no supervisor
# CMD["/usr/bin/supervisord", "-c", "/etc/supervisor/supervisor.conf"]
# Executa servidor php-fpm
CMD ["php-fpm"]
# Outros comandos teste
# COPY --from=composer:2.3.5 /usr/bin/composer /usr/bin/composer
# ENTRYPOINT ["docker/entrypoint.sh"]
I haven’t added the variables APP_URL and FORWARD_DB_PORT inside the .env file, so it is using the default values.
When I run the command docker ps it shows the containers running:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c2e011dbef7b laravel-app.laravel "docker-php-entrypoi…" 26 minutes ago Up 26 minutes 9000/tcp, 0.0.0.0:8000->80/tcp, :::8000->80/tcp app.laravel
3a59d462dcd0 mysql:9.0 "docker-entrypoint.s…" 26 minutes ago Up 26 minutes 0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 33060/tcp db.laravel
When I run docker network ls it shows:
NETWORK ID NAME DRIVER SCOPE
d45cea03d35b bridge bridge local
333c46cd7f8e host host local
dc1dd81e2b46 laravel_laravel bridge local
7bc7a1539992 none null local
currently the project is inside the vps at /var/www/laravel
Then when I run curl 127.0.0.1 or curl 0.0.0.0 it returns the standard page for the frontend.
But when I run curl 127.0.0.1:8000 or curl 0.0.0.0:8000 it shows an error:
curl: (56) Recv failure: Connection reset by peer
I don’t know if I need to open any ports, I’ve read that current docker compose already opens the ports.
When I run the commnand netstat -tulnit shows these active connections:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:33329 0.0.0.0:* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::8000 :::* LISTEN
tcp6 0 0 :::3306 :::* LISTEN
tcp6 0 0 :::80 :::* LISTEN
udp 0 0 127.0.0.1:323 0.0.0.0:*
udp6 0 0 ::1:323 :::*
And lastly, inside the container the permissions and group is root root with the standard permissions for writing, reading, etc. I don’t know if the group needs to change.
When inside the container if I try the command curl 127.0.0.1 it shows an error:
curl: (7) Failed to connect to 127.0.0.1 port 80 after 0 ms: Couldn't connect to server
I am looking for a solution on the internet and also using chat-gpt but there are many conflicting responses, and also many of them are about how to use nginx inside a container. I don’t know what could change from my setup.
Can someone help me?