script: Added support for Mac user for using docker compose script

[MPP-SG]

What was the problem

This pull request originated from my opened issue #407 .
As a Mac user I couldn't use the provided script ./bin/docker-compose up -d because on Darwin (Mac) the command readlink is not supported

Summary about the code changes

I added support for Mac user for useing the command ./bin/docker-compose up -d

This is done via:

1. Check the host machine (either Linux or Darwin or NOTSUPPORTED)
2. Set the variable WORKDIR respectively to the host machine
3. Carry on with the steps of the original script

I tested the new script on my Mac and docker-compose started as expected.

[otavio]

Outstanding! Thanks for looking at this!

I made two minor comments on the code. Please take a look.

Also, please add at the end of the commit log:

Fixes: #407 

So the issue is closed when we merge this.

[MPP-SG]

@otavio Thank you for your feedback!
I hope it now is better to understand the code 😄

In the check summary I see, that one check failed due to an exceeding line length of 80 characters. Could you please point me in the right direction where I have to change something and how. Thank you 😄

[otavio]

See the proposal I did. Please do whatever improvements you think are need.

Also, please squash the commits so we can merge it.

[MPP-SG]

@otavio sorry for asking this again, but I don't get why the "Commit Message Check" is failing. My last commit message has just 19 characters...
Or does this check validating the line length in the file of the pull request? 🤔 But that would confuse me, because in the original file I think there were also lines with more than 80 characters... Or does this check only validate the line length of comments in the file?

[otavio]

@otavio sorry for asking this again, but I don't get why the "Commit Message Check" is failing. My last commit message has just 19 characters...

Yes; this was failing due to the pull request. I made a change to fix it so please rebase your patches and do a force push.

Also, the commits ought to be squashed into a single one. Please look at it as well, when rebasing.

[otavio]

Fixed by #464; closing this now.