Impossible to start Symfony 5 server on Docker container (symfony serve -d) - symfony

Question

I trying to create Docker container to contenerized my Symfony 5 application.
I create first a Dockerfile
FROM php:7.4-fpm-alpine
# Update
RUN apk --no-cache update
RUN apk --no-cache add bash git
# Install Node
RUN apk --no-cache add --update nodejs npm
RUN apk --no-cache add --update python3
RUN apk --no-cache add --update make
RUN apk --no-cache add --update g++
# Install pdo
RUN docker-php-ext-install pdo_mysql
# Install Composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
# Symfony CLI
RUN curl -sS https://get.symfony.com/cli/installer | bash && mv /root/.symfony/bin/symfony /usr/local/bin/symfony
# WORK DIR
COPY . /var/www/html
WORKDIR /var/www/html
RUN composer update
RUN composer install
RUN npm install
# Start Symfony server on Port 8000
EXPOSE 8000
RUN symfony serve -d
Then I created a docker-compose.yml file (where I simply redirect port 8000 of the container to port 8080 on my machine).
version: '3.8'
services:
php-fpm:
container_name: infolea
build: ./
ports:
- 8080:8000
volumes:
- ./:/var/www/html
Then, I build my image docker-compose build.
Then, I run my image docker-compose up -d.
On my browser, the localhost:8080 link doesn't display anything.
Then I restart the symfony server by typing symfony serve -d on the terminal of my container and on localhost:8080 I can see my application working.
Something is weard, is that when I verified if my server is not started yet on my docker container terminal, I got this :
docker container terminal
What i want, it's to start my Symfony server dirrectly, without retapping symfony serve -d.
How can i do it ?

Answer 1

Try using CMD istead of RUN
CMD ["/usr/local/bin/symfony", "local:server:start" , "--port=8000", "--no-tls"]
see https://docs.docker.com/engine/reference/builder/#cmd