Mount point fix using /etc/localtime file creation and pointing to it

[ChaiBapchya]

Fixes the issue #44 of Mount denied - Path /etc/localtime is not shared from OS X and is not known to Docker.

Similar to docker/for-mac#2396
Solution that worked for me

$ mkdir ~/etc
$ vi ~/etc/timezone

Enter the timezone (mine was America/New_York)

Later updated the docker-compose.yml file with the following

  - ~/etc/timezone:/etc/localtime:ro
     # - /etc/localtime:/etc/localtime:ro #comment this

Hence this pull request.

[Asone]

Hi @ChaiBapchya, i believe this PR is on the right path, however adding a way to automate the file creation could make it a bit more complete.

My current guess is that we can use bash to achieve that :

sudo mkdir -p ~/etc && touch ~/etc/localtime | /usr/sbin/systemsetup -gettimezone | sed 's/^Time Zone\: //' > ~/etc/localtime

• It builds the ~/etc/localtime file path
• systemsetup allows us to retrieve the used timezone
• sed cleans the unnecessary text
• > ~/etc/localtime to store timezone in the file

Adding it in a dockefile could make it.

You'll also note that the command is using sudo as systemsetup requires root access to return the data.

EDIT : after a small research systemsetup seems to be specific to mac os. The instruction might need to be conditioned to mac os environment. If i have time to find how to do that i'll share it here.

[ChaiBapchya]

@Asone does this pull request work now?