Update docker-init to 74341e923bdf06cfb6b70cf54089
Fixes a bug with background processes after the child process exits.
diff:
https://github.com/crosbymichael/grimes/commit/74341e923bdf06cfb6b70cf54089c4d3ac87ec2d
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>