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Description:

justinrunner 0.1.0

justin
Run just commands inside a container.
Installation
System-wide:
$ just install

User:
$ just install ~/.local

Running just
$ justin --workspace . just ...
$ justin --workspace . --copy just ...

$ justin \
-E podman \
-F ci
-w . \
-v ./artifacts:/artifacts\
just -f ci.justfile somestage

Building images
Default image:
$ justin build

Flavors
$ justin --flavor minimal build
$ justin --flavor ci build
$ justin -F /path/to/my/flavor build

justin supports a concept of "flavors", which is a way to customize how
images are built. justin ships with the following flavors:

minimal (default one) - creates a minimal image viable for running just
commands.
ci - creates a bigger image with some tools preinstalled, more suitable
for continuous integration systems.

You may also point justin to a the directory with a custom flavor, which
is located outside of the original build context. justin will copy and
use your flavor.
During build flavors are copied to /install directory within a built
container.
Flavors have the following requirements:

they must provide a Flavor Configuration File (see below)
inside a flavor directory there must be an install directory, which will
be copied into /install within the container, but which will be removed
from the final image
they must provide an executable /install/install.sh
they must install /usr/bin/tini and just executables within the
container
they must provide /usr/local/bin/docker-entrypoint executable within the
container, which will be used as container entrypoint

Flavor Configuration File
Each flavor must provide a flavor.toml file with [build.args] section.
Each field from the [build.args] section will be used as a --build-arg
during the build. In case of name conflicts between build args in flavor.toml
and --build-arg passed in command line, command line ones have priority.
Example:
[build.args]
FROM_IMAGE = "debian"
FROM_TAG = "trixie-slim"

VENDOR = "John Doe's Company"
AUTHORS = "John Doe"
VERSION = "1.0"
ARCH = "x86-64"
DESCRIPTION = "One image to rule them all"
JUST_EXECUTABLE = "just"