SarahD SyraD

Setting up Docker with user namespaces on CentOS 7.4

The procedure below has been tested on a Digital Ocean VM with CentOS 7.4

# Install docker from RHEL’s standard repos
yum install -y docker

#
# We’ll activate the ‘user namespaces’ feature that defends against

	def coalesce(*args):
	"""Returns the first not None item. Similar to ?? in C#.
	It's different from a or b, where false values are invalid.

	:param args: list of items for checking
	:return the first not None item, or None
	"""
	return next((arg for arg in args if arg is not None))

	; /usr/local/bin/nasm -f macho 32.asm && ld -macosx_version_min 10.7.0 -o 32 32.o && ./32

	global start

	section .text
	start:
	push dword msg.len
	push dword msg
	push dword 1
	mov eax, 4