$ ch-build [-b BUILDER] [--builder-info] -t TAG [ARGS ...] CONTEXT
Build an image named TAG described by a Dockerfile. Place the result into the builder’s back-end storage.
Using this script is not required for a working Charliecloud image. You can also use any builder that can produce a Linux filesystem tree directly, whether or not it is in the list below. However, this script hides the vagaries of making the supported builders work smoothly with Charliecloud and adds some conveniences (e.g., pass HTTP proxy environment variables to the build environment if the builder doesn’t do this by default).
Supported builders, unprivileged:
- ch-image: Our internal builder.
Supported builders, privileged:
- docker: Docker.
Experimental builders (i.e., the code is there but not tested much):
- buildah: Buildah in “rootless” mode with no setuid helpers, using ch-run (via ch-run-oci) for RUN instructions. This mode is fully unprivileged.
- buildah-runc: Buildah in “rootless” mode with setuid helpers, using the default runc for RUN instructions.
- buildah-setuid: Buildah in “rootless” mode with setuid helpers, using ch-run (via ch-run-oci) for RUN instructions.
Specifying the builder, in descending order of priority:
- -b, --builder BUILDER
Command line option.
docker if Docker is installed; otherwise, ch-image.
Print the builder to be used and its version, then exit.
- -f, --file DOCKERFILE
Dockerfile to use (default: $CONTEXT/Dockerfile)
- -t TAG
Name (tag) of Docker image to build.
Print help and exit.
Print version and exit.
Additional arguments are accepted and passed unchanged to the underlying builder.
The tag suffix :latest is somewhat misleading, as by default neither ch-build nor bare builders will notice if the base FROM image has been updated. Use --pull to make sure you have the latest base image.
Create an image tagged foo and specified by the file Dockerfile located in the context directory. Use /bar as the Docker context directory. Use the default builder.
$ ch-build -t foo /bar
Equivalent to above:
$ ch-build -t foo --file=/bar/Dockerfile /bar
Instead, use /bar/Dockerfile.baz:
$ ch-build -t foo --file=/bar/Dockerfile.baz /bar
Equivalent to the first example, but use ch-image even if Docker is installed:
$ ch-build -b ch-image -t foo /bar
Equivalent to above:
$ export CH_BUILDER=ch-image $ ch-build -t foo /bar
If Charliecloud was obtained from your Linux distribution, use your distribution’s bug reporting procedures.
Otherwise, report bugs to: <https://github.com/hpc/charliecloud/issues>
Full documentation at: <https://hpc.github.io/charliecloud>
2014–2021, Triad National Security, LLC
charliecloud(7), ch-builder2tar(1), ch-test(1).