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singularity:tldr:44fb4
The command singularity build ${image-sif} ${docker:--godlovedc-lolcow}
is used to build a Singularity container image. Let's break it down:
-
singularity build
: This is the command to build a Singularity container image. -
${image-sif}
: This is a placeholder for the name of the output Singularity image file. The actual name should be provided in place of${image-sif}
when using the command. For example, if you want the image file to be named "myimage.sif", you would replace${image-sif}
withmyimage.sif
. -
${docker:--godlovedc-lolcow}
: This syntax is used to specify the source of the container image. In this case, it is using Docker as the source. If Docker is not available or not installed on your system, the Singularity command will automatically pull the Docker image named "godlovedc/lolcow". The colon:
separates the source type (Docker) from the image name or URL ("godlovedc-lolcow" in this example).
So, when you run this command with the appropriate values substituted, it will build a Singularity container image using the specified source (Docker) and save it as the provided image file name (${image-sif}).