Added script to build/publish docker image (project-chip#12)

* Added docker build script

* Update docker build script

scripts/build-docker-image.sh

@@ -0,0 +1,123 @@
+#!/usr/bin/env bash
+
+#
+# Copyright (c) 2020 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.
+#
+
+ME=$(basename "$0")
+ROOT_DIR=$(realpath $(dirname "$0")/..)
+cd $ROOT_DIR
+
+DEFAULT_IMAGE=csa-certification-tool-frontend
+
+
+GHCR_ORG="ghcr.io"
+ORG=${DOCKER_BUILD_ORG:-project-chip}
+
+# Latest commit hash
+GIT_SHA=$(git rev-parse --short HEAD)
+
+# If working copy has changes, append `-local` to hash
+GIT_DIFF=$(git diff -s --exit-code || echo "-local")
+if [[ $GIT_DIFF ]]; then
+  echo "  🔴 Git repo has changes. Please commit all changes before publishing."
+fi
+GIT_REV=$GIT_SHA$GIT_DIFF
+echo "$GIT_REV"
+
+
+IMAGE=${DOCKER_BUILD_IMAGE:-$DEFAULT_IMAGE}
+
+# version
+VERSION=${DOCKER_BUILD_VERSION:-$GIT_REV}
+
+# verify that repo is clean
+DIRTY=`git status --porcelain --untracked-files=no`
+
+
+# help
+[[ ${*/--help//} != "${*}" ]] && {
+    set +x
+    echo "Usage: $me <OPTIONS>
+
+  Build and (optionally tag as latest, push) a docker image from Dockerfile in CWD
+
+  Options:
+   --no-cache   passed as a docker build argument
+   --latest     update latest to the current built version (\"$VERSION\")
+   --push       push image(s) to $GHCR_ORG (requires docker login for \"$ORG\")
+   --skip-build skip the build/prune step
+   --help       get this message
+   --squash     squash docker layers before push them to $GHCR_ORG (requires docker-squash python module)
+   --clear      remove images after after publishing them
+
+"
+    exit 0
+}
+
+die() {
+    echo "$me: *** ERROR: $*"
+    exit 1
+}
+
+set -ex
+
+[[ -n $VERSION ]] || die "version cannot be empty"
+
+BUILD_ARGS=()
+if [[ ${*/--no-cache//} != "${*}" ]]; then
+    BUILD_ARGS+=(--no-cache)
+fi
+
+# Don't run `docker build` and `docker image prune` when `--skip-build` in arguments
+[[ ${*/--skip-build//} != "${*}" ]] || {
+    docker build "${BUILD_ARGS[@]}" --build-arg TARGETPLATFORM="$TARGET_PLATFORM_TYPE"  --build-arg GIT_SHA="$GIT_REV" --build-arg VERSION="$VERSION" -t "$GHCR_ORG"/"$ORG"/"$IMAGE":"$VERSION" .
+    docker image prune --force
+}
+
+[[ ${*/--squash//} != "${*}" ]] && {
+    command -v docker-squash >/dev/null &&
+        docker-squash "$GHCR_ORG"/"$ORG"/"$IMAGE":"$VERSION" -t "$GHCR_ORG"/"$ORG"/"$IMAGE":squashed
+}
+
+[[ ${*/--latest//} != "${*}" ]] && {
+    if [[ ${*/--squash//} != "${*}" ]]; then
+        docker tag "$GHCR_ORG"/"$ORG"/"$IMAGE":squashed "$GHCR_ORG"/"$ORG"/"$IMAGE":latest
+    else
+        docker tag "$GHCR_ORG"/"$ORG"/"$IMAGE":"$VERSION" "$GHCR_ORG"/"$ORG"/"$IMAGE":latest
+    fi
+}
+
+[[ ${*/--push//} != "${*}" ]] && {
+    if [[ $GIT_DIFF ]]; then
+        die "Don't push image with local changes"
+    fi
+    docker push "$GHCR_ORG"/"$ORG"/"$IMAGE":"$VERSION"
+    [[ ${*/--latest//} != "${*}" ]] && {
+        docker push "$GHCR_ORG"/"$ORG"/"$IMAGE":latest
+    }
+}
+
+[[ ${*/--clear//} != "${*}" ]] && {
+    docker rmi -f "$GHCR_ORG"/"$ORG"/"$IMAGE":"$VERSION"
+    [[ ${*/--latest//} != "${*}" ]] && {
+        docker rmi -f "$GHCR_ORG"/"$ORG"/"$IMAGE":latest
+    }
+    [[ ${*/--squash//} != "${*}" ]] && {
+        docker rmi -f "$GHCR_ORG"/"$ORG"/"$IMAGE":squashed
+    }
+}
+
+docker images --filter=reference="$GHCR_ORG/$ORG/*"