Understanding a complex docker command -

i going through tutorial online , author , uses following command along way:

sudo docker run --name my_sql -e mysql_root_password=mysecretpassword --volumes-from my_datastore -d mysql

so understanding of above command follows there specific name given image , after there environment variable being passed , after there --volumens-from command being executed , -d indicates container should run in background .

i not sure mysql @ end.

my question following:

docker uses following syntax:

docker [options] command [arg...]  

in command have highlighted [options] command , [arg...] ? mysql doing in end of command ?

thank you.

alex-z.

great question, , you're correct on statements.

the naming convention follows:

the name of container

--name my_sql 

environment variable(s) - can add many want, each additional '-e' directive

-e mysql_root_password=mysecretpassword  

directive use volume different container

--volumes-from my_datastore  

run in background

-d  

the name of docker image you're using make container

mysql  

you use mysql:latest (the :latest tag pull recent version of image).

hope helps!