Feature/system release (#42)

* adding system_release.sh

* made executable

* specified git add input

docker/system_release.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+
+#  Copyright (C) 2018-2020 LEIDOS.
+# 
+#  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.
+
+# This script takes a system release name and version number as arguments, and 
+# updates version dependencies in Dockerfile and /docker/checkout.sh accordingly.
+
+# The -u | --unprompted option can be used to skip the interactive prompts, and
+# provide arguments directly from the commandline.
+
+if [[ $# -eq 0 ]]; then
+    echo "Enter the system release name:"
+    read RELEASE_NAME
+    echo "Enter the system release version number:"
+    read RELEASE_VERSION
+else
+    while [[ $# -gt 0 ]]; do
+    arg="$1"
+    case $arg in
+        -u|--unprompted)
+            RELEASE_NAME=$2
+            RELEASE_VERSION=$3
+            shift
+            shift
+            shift
+        ;;
+    esac
+done
+fi
+
+SYSTEM_RELEASE=carma-system-$RELEASE_VERSION
+RELEASE_BRANCH=release/$RELEASE_NAME
+
+if git ls-remote -q | grep $RELEASE_BRANCH; then
+    echo "Checking out $RELEASE_BRANCH branch."
+    git checkout $RELEASE_BRANCH
+
+    echo "Updating checkout.sh to point to system release version."
+    sed -i "s|CARMA[a-zA-Z]*_[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g; s|carma-[a-zA-Z]*-[0-9]*\.[0-9]*\.[0-9]*|$SYSTEM_RELEASE|g" docker/checkout.sh
+
+    echo "Updating Dockerfile to point to system release version."
+    sed -i "s|:CARMASystem_[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g; s|:carma-system-[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g; s|:[0-9]*\.[0-9]*\.[0-9]*|:$SYSTEM_RELEASE|g" Dockerfile
+
+    git add docker/checkout.sh Dockerfile
+
+    git commit -m "Updated dependencies for $SYSTEM_RELEASE"
+
+    git tag -a $SYSTEM_RELEASE -m "$SYSTEM_RELEASE version tag."
+
+    echo "Dockerfile and checkout.sh updated, committed, and tagged."
+else
+    echo "$RELEASE_BRANCH does not exist. Exiting script."
+    exit 0
+fi