I assume config.json
is the new .dockercfg
file.
See “docker/cliconfig/config.go
“
// ConfigFileName is the name of config file
ConfigFileName = "config.json"
oldConfigfile = ".dockercfg"
The new config file is now documented under man/config-json.5.md
That was introduced in commit 18c9b6c in docker 1.7.0 (April 2015)
Add
.docker/config.json
and support for HTTP HeadersThis PR does the following:
- migrated
~/.dockerfg
to~/.docker/config.json
.
The data is migrated but the old file remains in case its needed.
Note: since 2016:
config-json.5
todocker-config-json.5
(commit a596d3d, docker docs-v1.12.0-2016-07-28 )- the documentation was moved to
docker/cli
(commit b5579a4, Docker v17.07.0-ce-rc1)
It differs from docker-daemon.8.md
which uses by default /etc/docker/daemon.json
, the daemon configuration file introduced with Docker v1.10.
So:
config.json
is for the docker CLIdaemon.json
is for the dockerd (daemon) CLI
But the config.json
(which applies to all containers) does not include docker run
network settings: --net=host
could not be specified in that config file.
Update 2021 (since 2017), as noted by slm in the comments:
The credentials are now stored in whatever your OS makes use of for managing secrets.
On MacOS they get stored under Keychain, you can find them by looking for “Docker Credentials” under All Items
You can see the project docker/docker-credential-helpers
: a suite of programs to use native stores to keep Docker credentials safe.
See docker login/Credentials Store for more.