![]() The other reason is that you have not started docker. You can fix this either by running the command as root using sudo (since root has the permission to access docker) or adding your user to the docker group: sudo usermod -a -G docker $USERĪnd then logging out and logging back in completely (or restarting the system/server). The command to start Docker depends on your operating system. This makes it easier to automatically start Docker when the machine reboots. On a typical installation the Docker daemon is started by a system utility, not manually by a user. ![]() Not a native solution, so you’ll need to access your Docker Machine’s IP address if you’re developing web apps. The common reason is that the user you are running the command as does not have the permissions to access docker. Start the daemon using operating system utilities. You need to either use the Docker Quickstart Terminal, or configure your own terminal to connect to the Docker Daemon running a VM. There are two possible reasons for this error message. If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable. You want to run a docker-container or docker-compose application, but once you try to start it, you see this error message: ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?
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