Add -I include parameter to samba.sh

[strayer]

This PR adds a new parameter -I to samba.sh. The user can use this to add additional configuration to smb.conf, in my example a TimeMachine share with not yet supported config options.

Example:

# docker-compose.yml
version: '3.4'

services:
  samba:
    volumes:
      - /mnt/shared:/mnt/shared
      - /mnt/timemachine:/mnt/timemachine
      - ./timemachine.conf:/etc/samba/timemachine.conf:ro
    ports:
      - 445:445
    command: >
      -w WORKGROUP
      -g "fruit:model = RackMac"
      -g "fruit:advertise_fullsync = true"
      -g "fruit:aapl = true"
      -s "shared;/mnt/shared/;yes;no;no;user"
      -I "/etc/samba/timemachine.conf"

; timemachine.conf
[TimeMachine]
    path = /mnt/timemachine
    browsable = no
    vfs objects = catia fruit streams_xattr
    guest ok = no
    fruit:aapl = yes
    valid users = user
    read only = no

[albertmichaelj]

I'll second this pull request. This is exactly the option that I was looking for to make this a perfect samba setup. Please do merge this. Thanks for your work on this excellent samba docker container!

[dperson]

This look great thanks.