pass arguments from docker run to dockerfile

Question

Below one is my docker build command

docker build -t test/magento2:1.0.0 --build-arg BASE_URL=http://www.hostname.net/ --build-arg DATABASE_HOST=localhost --build-arg DATABASE_NAME=magento --build-arg DATABASE_USER=root --build-arg DATABASE_PASSWORD=root --build-arg ADMIN_USERNAME=test --build-arg ADMIN_FIRSTNAME=test --build-arg ADMIN_LASTNAME=Mobi --build-arg [email protected] --build-arg ADMIN_PASSWORD=test@123 --build-arg DEFAULT_LANGUAGE=en_US --build-arg DEFAULT_CURRENCY=INR --build-arg DEFAULT_TIMEZONE=Asia/Kolkata --build-arg BACKEND_FRONTNAME=admin .

Dockerfile

ARG BASE_URL ARG DATABASE_HOST ARG DATABASE_NAME ARG DATABASE_USER ARG DATABASE_PASSWORD ARG ADMIN_USERNAME ARG ADMIN_FIRSTNAME ARG ADMIN_LASTNAME ARG ADMIN_EMAIL ARG ADMIN_PASSWORD ARG DEFAULT_LANGUAGE ARG DEFAULT_CURRENCY ARG DEFAULT_TIMEZONE ARG BACKEND_FRONTNAME RUN service mysql start && \ cd /var/www/html && php bin/magento setup:install --base-url=$BASE_URL --db-host=$DATABASE_HOST --db-name=$DATABASE_NAME --db-user=$DATABASE_USER --db-password=$DATABASE_PASSWORD --admin-firstname=$ADMIN_FIRSTNAME --admin-lastname=$ADMIN_LASTNAME --admin-email=$ADMIN_EMAIL --admin-user=$ADMIN_USERNAME --admin-password=$ADMIN_PASSWORD --language=$DEFAULT_LANGUAGE --currency=$DEFAULT_CURRENCY --timezone=$DEFAULT_TIMEZONE --use-rewrites=1 --backend-frontname=$BACKEND_FRONTNAME

It is working fine, but I'm looking something

docker run <here I need to pass my arguments>

I'm thinking about ENV but it makes confusion. I don't know how to pass env variable from docker run command to dockerfile.

I believe there is a way to done.

can anyone help me on this?

How did you solve this problem. I am on something similar on docker magento2 container — Tara Prasad Gurung
– Tara Prasad Gurung, Commented Nov 27, 2017 at 10:41
@TaraPrasadGurung up to my mind, I added entrypoint, which executes shell script while docker run, that shell script check whether the magento is installed or not. If not install, it installs. If install, it ignores. — Bilal Usean
– Bilal Usean, Commented Nov 27, 2017 at 11:02
what about the paramters to pass with run with -e from where are you passing that — Tara Prasad Gurung
– Tara Prasad Gurung, Commented Nov 27, 2017 at 11:08
e.g) docker run -e a=b.... use this environment value in entrypoint shell script to install magento — Bilal Usean
– Bilal Usean, Commented Nov 27, 2017 at 11:18

user2915097 · Accepted Answer · 2017-04-20 06:44:03Z

2

you can pass argument to

docker run

so, when you run a container

just check

docker run --help

and you will get, among other things

-e, --env value Set environment variables (default []) --env-file value Read in a file of environment variables (default [])

ENV is taken care of at build time

if you want

"I don't know how to pass env variable from docker run command to dockerfile"

you can't, docker run starts a container from a created image, a Dockerfile helps you build a new image

The flow

A Dockerfile -> docker build -t myuser/myimage:v12.3 . my new image

launch a container docker run myuser/myimage:v12.3 myoptions from my image myuser/myimage:v12.3

answered Apr 20, 2017 at 6:44

user2915097

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5 Comments

Bilal Usean Over a year ago

thanks! I need to run above dockerfile RUN while create container. what options I need to use? is CMD suite?

user2915097 Over a year ago

Check docker run --env

Bilal Usean Over a year ago

I know buddy docker run -e command. When I run this I need to install magento as per env variable. My doubt is where I need to write this logic to install magento in dockerfile. This is I'm looking exactly, in below link he target the shell script to install magento github.com/alankent/docker-magento2-demo-apache/blob/master/… docker run commands seems docker run -e PUBLIC_HOST=yourhost.example.com ..... As per my understanding dockerfile RUN does't execute while docker run, then how he execute shell script while docker run.

user2915097 Over a year ago

notice at the end of your link ENTRYPOINT ["bash", "-c"] CMD ["/usr/local/bin/runserver"] the CMD and ENTRYPOINT are starting the process in the image

user2915097 Over a year ago

Your Dockerfile lacks a CMD or ENTRYPOINT, check stackoverflow.com/questions/21553353/…

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