Update scripts to check if docker is usable for $USER

Added new script for checking user permissions on
docker command execution

Change-Id: I3b727590d9a29f416f5b847912b7250c555c2333
Closes-Bug: #1473554

tools/build-docker-image

@@ -1,13 +1,10 @@
 #!/bin/bash
 
-if [[ $EUID -eq 0 ]]; then
-    echo "This script must not be run as root.  Instead add yourself to the docker group." 1>&2
-    exit 1
-fi
-
 TOPDIR=$(git rev-parse --show-toplevel)
 IMGDIR="$(cd "$(dirname "$0")" && pwd)"
 
+. $TOPDIR/tools/validate-docker-execute
+
 RELEASE_NAMESPACE=kollaglue
 NAMESPACE=kollaglue
 PREFIX=centos-rdo-

tools/cleanup-containers

@@ -4,6 +4,8 @@
 REAL_PATH=$(python -c "import os,sys;print os.path.realpath('$0')")
 cd "$(dirname "$REAL_PATH")/.."
 
+. tools/validate-docker-execute
+
 # Remove docker containers
 docker ps -a -q | while read -r line ; do
     echo "Removing docker containers"

tools/cleanup-images

@@ -1,3 +1,9 @@
 #!/bin/bash
 
+# Move to top level directory
+REAL_PATH=$(python -c "import os,sys;print os.path.realpath('$0')")
+cd "$(dirname "$REAL_PATH")/.."
+
+. tools/validate-docker-execute
+
 docker rmi $@ $(docker images -a -q)

tools/kolla

@@ -6,6 +6,8 @@
 REAL_PATH=$(python -c "import os,sys;print os.path.realpath('$0')")
 cd "$(dirname "$REAL_PATH")/.."
 
+. tools/validate-docker-execute
+
 NETWORK_MANAGER=$(grep -sri NETWORK_MANAGER ./compose/openstack.env | cut -f2 -d'=')
 if [[ -z "$NETWORK_MANAGER" ]]; then
     echo 'No network manager defined in ./compose/openstack.env, defaulting to "neutron".'

tools/validate-docker-execute

@@ -0,0 +1,14 @@
+#!/bin/bash
+#
+# This script can be used to check user privilege to execute
+# docker commands
+
+function check_dockerexecute {
+    docker ps &>/dev/null
+    return_val=$?
+    if [ $return_val -ne 0 ]; then
+        echo "User $USER can't seem to run Docker commands. Verify product documentation to allow user to execute docker commands" 1>&2
+        exit 1
+    fi
+}
+check_dockerexecute