You can always just execute the docker
command in your terminal.
If docker is installed on your machine, it should output all of its commands:
Usage: docker [OPTIONS] COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/Users/nickmajor/.docker")
-c, --context string Name of the context to use to connect to the daemon (overrides DOCKER_HOST env var and default context set with "docker context use")
-D, --debug Enable debug mode
-H, --host list Daemon socket(s) to connect to
-l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info")
--tls Use TLS; implied by --tlsverify
--tlscacert string Trust certs signed only by this CA (default "/Users/nickmajor/.docker/ca.pem")
--tlscert string Path to TLS certificate file (default "/Users/nickmajor/.docker/cert.pem")
--tlskey string Path to TLS key file (default "/Users/nickmajor/.docker/key.pem")
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quit
. . .
If not, the output will contain an error similar to this:
-bash: docker: command not found