Docker Image improvements

Support
1

Hi,

I have noticed your Docker image run several process inside (tomcat, postfix, …). I think, and I’m not alone, it’s a bad practice. (See docker - Why it is recommended to run only one process in a container? - DevOps Stack Exchange).

Could you improve that ?

Thanks.

2

The only process started in the images is the Tomcat server (I don’t remember why we install the “postfix” package but we don’t start a postfix process)

3

Thank you for your quick answer,

In your README file, you write :
'You can start a local Postfix SMTP server by using -e LOCAL_SMTP_SERVER=true"
this’s why the Postfix package is installed.

And in your run.sh file:
“if [ “$LOCAL_SMTP_SERVER” = “true” ]
then
echo “Starting SMTP server…”
postfix start
echo “…done”
fi”
This’s how Postfix is started.

So, if Postfix is never used, could use remove Postfix from the image?

Thanks.

4

I must admit I don’t remember this… I think this was implemented for a particular customer who needed this. I will check internally if it still makes sense.

Anyway I agree this should be isolated in a specialised image for this customer and removed from the default image.

5

Ok we have removed postfix from our default images so now there is only one possible process started in the container: Tomcat.

We have added some details in the readme file to explain what to do if you want to use this feature (with a disclaimer that says it is not a good idea to use it in production). See https://github.com/simplicitesoftware/docker/blob/master/README.md

6

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