每当我尝试使用RSelenium软件包时，我都会收到上述错误
shell('docker run -d -p 4445:4444 selenium/standalone-chrome')
docker: error during connect: Post
http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.30/containers/create: open //./pipe/docker_engine: The system cannot find the file specified. In the default daemon configuration on Windows, the docker client must be run elevated to connect. This error may also indicate that the docker daemon is not running.
See 'docker run --help'.
Warning messages:
1: running command 'C:\Windows\system32\cmd.exe /c docker run -d -p
4445:4444 selenium/standalone-chrome' had status 127
2: In shell("docker run -d -p 4445:4444 selenium/standalone-chrome") :
'docker run -d -p 4445:4444 selenium/standalone-chrome' execution failed with error code 127
答案 0 :(得分：0)
检查未正确设置的docker环境变量的stauts。请注意，请查看以下命令，
docker-machine env box
（注意：默认情况下，为docker-machine设置的env是默认值）
否则您可以将其设置为如下所示
$ set | grep DOCKER
DOCKER_CERT_PATH=C:\Users\mohan\.docker\machine\machines\deis
DOCKER_HOST=tcp://192.168.99.100:2376
DOCKER_MACHINE_NAME=deis
DOCKER_TLS_VERIFY=1
DOCKER_TOOLBOX_INSTALL_PATH=C:\Program Files\Docker Toolbox
$ docker-machine ls
NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS
deis * virtualbox Running tcp://192.168.99.100:2376 v17.03.0-ce
$ docker ps -a
time="2017-03-23T11:11:55-07:00" level=info msg="Unable to use system certificate pool: crypto/x509: system root pool is not available on Windows"
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
$ docker pull busybox
time="2017-03-23T11:13:07-07:00" level=info msg="Unable to use system certificate pool: crypto/x509: system root pool is not available on Windows"
Using default tag: latest
latest: Pulling from library/busybox
7520415ce762: Pull complete
Digest: sha256:32f093055929dbc23dec4d03e09dfe971f5973a9ca5cf059cbfb644c206aa83f
Status: Downloaded newer image for busybox:latest
希望这会奏效。