Explanation:
The ENTRYPOINT option specifies the concrete default application that is used every time the image is used to build a container.
Explanation:
VOLUME — Creates a mount point within the Container that connects it to the Docker Host's file systems. The contents of the chosen point in the image are filled into new volumes. It's also important to note that specifying Volumes in a Dockerfile can cause problems.
Explanation:
Docker Universal Control Plane (UCP) is an enterprise on-premise solution that allows IT operations teams to deploy and maintain Dockerized apps in production while also providing developers with the agility and portability they require, all while staying inside the business firewall.
Explanation:
CMD specifies the container's default commands and/or parameters. If you require a default command that users can simply override, CMD is the best command to employ.
Explanation:
Docker EXPOSE is a Dockerfile directive or instruction that tells Docker that while executing a container, the image built by this Dockerfile will listen on this port. It does not expose the indicated port; rather, it is a type of documentation that informs the person in charge of the container about the port that must be exposed or published in order for outside communication to reach the container.
Explanation:
ENV settings, unlike ARG instructions, are always saved in the created image. ENV variables are preserved in the created image, while ARG variables are not. The arguments can be saved elsewhere, the most convenient place being in an environment variable.
Explanation:
Beyond the filepath in Go. Docker also has a special wildcard string ** that can be used to match any number of directions (including zero). **/*.go, for example, will exclude any files ending in.go that are found in all directories, including the build context's root.
Explanation:
The direct-lvm mode is intended for usage in production.
Explanation:
docker exec -it nginx /bin/sh will start an interactive session with a TTY attached to STDIN.
