Dockerfile Commands and Syntax Quiz

• The FROM statement in a Dockerfile defines which image to download and start from.
• A Dockerfile can have multiple FROM statements, which means that the Dockerfile produces more than one image.
• The MAINTAINER statement defines the author of the Dockerfile and how to contact them in case of any bugs.
• The RUN statement defines what process will be running inside the container at runtime by specifying a command to run through the shell and waiting for it to finish.
• The ADD statement is used to copy new files, directories, or remote file URLs into the filesystem of the image.
• The ENTRYPOINT statement specifies the starting of the expression to use when starting your container.
• The CMD statement defines the entire command to be executed.
• The EXPOSE statement defines the state of the port that the container will be using.
• The Dockerfile syntax is simple, with one or two lines specifying the command or volume to be created.
• The EXPOSE statement specifies which port on the host computer the container will listen on.
• The WORKDIR statement sets the working directory for the container.
• The VOLUME statement defines shared or ephemeral volumes.
• When two arguments are specified, the VOLUME statement maps a host path into a container path.
• When one argument is specified, the VOLUME statement creates a volume that can be inherited by the later containers.

Test your knowledge of Dockerfile commands and syntax with this quiz. From defining the base image with FROM statement to specifying the entry point and working directory, this quiz covers essential Dockerfile concepts.