[scripts] add helper script to build otbr docker for test events

scripts/helpers/otbr_docker_build.sh

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+
+#
+# Copyright (c) 2021 Project CHIP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# otbr_docker_build.sh - utility for building (and optionally) tagging and pushing
+#                        the otbr Docker image.
+#
+# Example usage:
+# $ ./otbr_docker_build.sh --rev 15d556e --tag TE3 --push
+#
+
+set -ex
+
+# Default parameters
+ORG=connectedhomeip
+IMAGE=otbr
+PLATFORMS=linux/amd64,linux/arm/v7,linux/arm64
+ARGS=()
+
+# Temporary directory used, within $DIR
+OTBR_DIR=$(mktemp -d)
+
+if [ ! -e "$OTBR_DIR" ]; then
+    echo "Error while creating the temporary directory" >&2
+    exit 1
+fi
+
+# Ensure temporary folder is removed on exit
+trap 'rm -rf "$OTBR_DIR"' EXIT
+
+usage() {
+    echo "Usage: $0 --rev <otbr_revision> [--org <organization> --image <image> --tag <tag> --push]" >&2
+    exit 0
+}
+
+while (($#)); do
+    case "$1" in
+        --path)
+            OTBR_PATH="$2"
+            shift
+            ;;
+        --rev)
+            REVISION="$2"
+            shift
+            ;;
+        --org)
+            ORG="$2"
+            shift
+            ;;
+        --image)
+            IMAGE="$2"
+            shift
+            ;;
+        --tag)
+            TAG="$2"
+            shift
+            ;;
+        --push) ARGS+=("--push") ;;
+        --help) usage ;;
+    esac
+    shift
+done
+
+[[ -n "$REVISION" ]] || usage
+[[ -n "$TAG" ]] && ARGS+=("-t" "$ORG/$IMAGE:$TAG")
+
+VERSION=otbr-${REVISION:0:7}
+
+# Checkout ot-br-posix to the provided revision
+git -C "$OTBR_DIR" clone https://github.com/openthread/ot-br-posix.git .
+git -C "$OTBR_DIR" reset --hard "$REVISION"
+
+# Build docker image
+docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+docker buildx create --use --name otbr_builder --node otbr_node --driver docker-container --platform "$PLATFORMS"
+docker buildx build --no-cache -t "$ORG/$IMAGE:$VERSION" -f "$OTBR_DIR/etc/docker/Dockerfile" --platform "$PLATFORMS" "${ARGS[@]}" "$OTBR_DIR"
+
+exit 0