Update description on hub.docker.com

[ckunki]

The current ticket requests to update the description on hub.docker.com.

Acceptance criteria

Please note: Max 100 characters are supported.

• command docker pull exasol/ai-lab in description fails: Fixed by #223
• AI-Lab user guide is linked
• (some thing else?)

Delimitation

The current description names the following command which fails as reported by Dirk B.

docker pull exasol/ai-lab

Unfortunately, this cannot be changed but will be fixed in #223

[tkilias]

I care more about the empty overview on docker hub we should link to the user guide. The pull command, we can't change. That needs to be fixed #223

[ckunki]

Hello @tkilias : I added a description and an overview, see here: docker.com

	Description	Overview
Length limit	max. 100 characters	--
Links clickable?	❌ No	✅ Yes