Adjust spaces and empty lines in Dockerfile

Details:

- Remove trailing spaces
- Remove additional empty lines
- Replace a few tabs with spces for consistent indent

Dockerfile

@@ -28,10 +28,8 @@
 #
 #       docker run --device /dev/kvm --device /dev/snd -v /tmp/.X11-unix:/tmp/.X11-unix -e "DISPLAY=${DISPLAY:-:0.0}" sickcodes/docker-osx:latest
 #
-#
 # Run with SSH:
 #
-# 
 #       docker run --device /dev/kvm --device /dev/snd -e RAM=6 -p 50922:10022 -v /tmp/.X11-unix:/tmp/.X11-unix -e "DISPLAY=${DISPLAY:-:0.0}" sickcodes/docker-osx:latest
 #       # ssh fullname@localhost -p 50922
 #
@@ -49,7 +47,6 @@
 #
 #       docker run ... -e EXTRA="-usb -device usb-host,hostbus=1,hostaddr=8" ...
 #       # you will also need to pass the device to the container
-#
 
 FROM archlinux:latest
 
@@ -130,10 +127,10 @@ WORKDIR /home/arch/OSX-KVM/gibMacOS
 
 # this command takes a while!
 RUN perl -p -i -e 's/print("Succeeded:")/exit()/' ./gibMacOS.command \
-	&& { python gibMacOS.command -v "${VERSION}" -d || echo Done; } \
-	&& qemu-img convert /home/arch/OSX-KVM/gibMacOS/macOS\ Downloads/publicrelease/*/BaseSystem.dmg -O qcow2 -p -c /home/arch/OSX-KVM/BaseSystem.img \
-	&& qemu-img create -f qcow2 /home/arch/OSX-KVM/mac_hdd_ng.img "${SIZE}" \
-	&& rm /home/arch/OSX-KVM/gibMacOS/macOS\ Downloads/publicrelease/*/BaseSystem.dmg
+    && { python gibMacOS.command -v "${VERSION}" -d || echo Done; } \
+    && qemu-img convert /home/arch/OSX-KVM/gibMacOS/macOS\ Downloads/publicrelease/*/BaseSystem.dmg -O qcow2 -p -c /home/arch/OSX-KVM/BaseSystem.img \
+    && qemu-img create -f qcow2 /home/arch/OSX-KVM/mac_hdd_ng.img "${SIZE}" \
+    && rm /home/arch/OSX-KVM/gibMacOS/macOS\ Downloads/publicrelease/*/BaseSystem.dmg
 
 # > Launch.sh
 # > Docker-OSX.xml