Run as a Background Process

[FinnLawrence]

Added new CLI option flags:

• --background, aliased to -b. Runs the server using a Daemon process in the background.
• --output, sets the output location for the logger. Only used if --background is true, and the quiet mode flag has not been set.

I needed this to be able to run the FakeS3 server and my test suite easily in our docker container.

• Tests passing.
• CLA executed.

[limcross]

First of all, this is a a fantastic new feature 👍 so thanks for your time @FinnLawrence. I hope the contributing team will see this soon.

Without prejudice of the previous, instead of -b (background), could be great use -d (daemon), i think is more conventional. Tell me what you think about it

[FinnLawrence]

First of all, this is a a fantastic new feature 👍 so thanks for your time @FinnLawrence. I hope the contributing team will see this soon.

Without prejudice of the previous, instead of -b (background), could be great use -d (daemon), i think is more conventional. Tell me what you think about it

Good suggestion @limcross, I've amended the flag and descriptions.