util/docker: Add build script

Integration for additional container images might be added to the
Makefile at some later point. However, in order to build and test new
images just add a simple script which fulfills that requirement until
then.

Change-Id: Ibd0a6d59f395e074c784452849650d7f03b4f1d8
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79361
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

util/docker/build.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env sh
+
+IMAGE_DIR="$1"
+IMAGE_TYPE="$2"
+
+if [ -z "${IMAGE_DIR}" ] || [ -z "${IMAGE_TYPE}" ]; then
+	echo "Usage: $0 <directory> <type>"
+	echo "Missing parameters. Exit."
+	exit 1
+fi
+
+case "${IMAGE_TYPE}" in
+base)
+	;;
+toolchain)
+	;;
+jenkins)
+	;;
+*)
+	echo "No valid image type given. Exit."
+	exit 1
+	;;
+esac
+
+docker build \
+	--no-cache \
+	--tag coreboot/coreboot-sdk-${IMAGE_DIR}-${IMAGE_TYPE}:latest \
+	-f ${IMAGE_DIR}/Dockerfile.${IMAGE_TYPE} \
+	./${IMAGE_DIR}