[PATCH] scripts: add container.sh as simple podman wrapper

[Ahmad Fatoum <ahmad@a3f.at>]

We have a Containerfile in tree now that is used for CI, but it's not
completely self evident, how to use it locally. Add a simple script
that mounts the current working directory into the container and calls
its arguments inside.

Example building MAKEALL (Some configs will expectedly fail due to size
or firmware constraints):

  ./scripts/container.sh ./MAKEALL

Example starting a shell:

  ./scripts/container.sh /bin/bash

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
---
 scripts/container.sh | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100755 scripts/container.sh

diff --git a/scripts/container.sh b/scripts/container.sh
new file mode 100755
index 000000000000..4ddee7d0a90c
--- /dev/null
+++ b/scripts/container.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+CONTAINER=${CONTAINER:-ghcr.io/barebox/barebox/barebox-ci:latest}
+KCONFIG_ADD="$test/kconfig/disable_target_tools.kconf KCONFIG_ADD"
+
+while getopts "c:uh" opt; do
+	case "$opt" in
+	h)
+		echo "usage: $0 [-c CONTAINER] [command...]"
+		echo "This script mounts the working directory into a container"
+		echo "and runs the specified command inside or /bin/bash if no"
+		echo "command was specified."
+		echo "OPTIONS:"
+		echo "  -c <container>    container image to use (default: $CONTAINER)"
+		echo "  -u                pull container image updates"
+		echo "  -h                This help text"
+
+		exit 0
+		;;
+	u)
+		update=1
+		;;
+	c)
+		CONTAINER="$OPTARG"
+		;;
+	esac
+done
+
+shift $((OPTIND-1))
+
+[ -n "$update" ] && podman pull "$CONTAINER"
+
+pwd_real=$(realpath $PWD)
+
+exec podman run -it -v "$PWD:$PWD:z" -v "$pwd_real:$pwd_real:z" --rm \
+	-e TERM -e ARCH -e CONFIG -e JOBS -e LOGDIR -e REGEX \
+	-e KCONFIG_ADD -w "$PWD" --userns=keep-id \
+	-- "$CONTAINER" "${@:-/bin/bash}"
-- 
2.40.1