The configDir (and "DOCKER_CONFIG" environment variable) is now only used
for the default location for TLS certificates to secure the daemon API.
It is a leftover from when the "docker" and "dockerd" CLI shared the same
binary, allowing the DOCKER_CONFIG environment variable to set the location
for certificates to be used by both.
This patch merges it into cmd/dockerd, which is where it was used.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Sebastiaan van Stijn
ef7ab7bde8