Test that docker is running before running the component

[dgarijo]

At the moment DAME will first download the component before attempting to run. We should make sure Docker is installed/running before that.

[issue-label-bot]

Issue-Label Bot is automatically applying the label feature_request to this issue, with a confidence of 0.74. Please mark this comment with 👍 or 👎 to give our bot feedback!

Links: app homepage, dashboard and code for this bot.