nextflow.container
The nextflow.container package implements the integration with container runtimes.
Class Diagram
classDiagram
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%% nextflow.container
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direction LR
BashWrapperBuilder --> ContainerBuilder : build
ContainerBuilder <|-- CharliecloudBuilder
ContainerBuilder <|-- DockerBuilder
ContainerBuilder <|-- PodmanBuilder
ContainerBuilder <|-- ShifterBuilder
ContainerBuilder <|-- SingularityBuilder
ContainerBuilder <|-- UdockerBuilder
SingularityBuilder <|-- ApptainerBuilder
Note
Some classes may be excluded from the above diagram for brevity.
Notes
The ContainerBuilder class is the base class for all container runtimes supported by Nextflow. It produces the container wrapper command for a given task run.
Executors that support containerized tasks insert this wrapper command into the task wrapper script (.command.run). Executors that are container-native, i.e. that launch the task wrapper itself inside a container, don’t need to generate a container wrapper command.