tools/scripts/build_spec.sh: some tweaks and fixes

- Fix the mkdir command
- Exec container in privileged mode

Change-Id: Icb3b033ccb9c1d0902ae8f75bd1592faf5f404f1
Signed-off-by: Shreenidhi Shedi <shreenidhi.shedi@broadcom.com>
Reviewed-on: http://photon-gerrit.lvn.broadcom.net/c/photon/+/25152
Tested-by: gerrit-photon <svc.photon-ci@broadcom.com>
Reviewed-by: Srinidhi Rao <srinidhi.rao@broadcom.com>

tools/scripts/build_spec.sh

@@ -54,12 +54,12 @@ else
   STAGE=$($READLINK -m "$2")
 fi
 
-mkdir -p "$STAGE/LOGS"
+mkdir -p ${STAGE}/LOGS
 LOGFILE=stage/LOGS/$(basename "$SPECFILE" .spec).log
 
 RPM_MACROS+=( --define \"dist .ph$VERSION\" --define \"with_check $WITH_CHECK\" )
 
-mkdir -p "$STAGE/{RPMS,SRPMS}"
+mkdir -p ${STAGE}/{RPMS,SRPMS}
 
 # use &3 for user output
 exec 3>&1
@@ -108,10 +108,9 @@ function tryrun() {
 }
 
 function in_sandbox() {
-  eval docker exec $CONTAINER $@
+  eval docker exec --privileged ${CONTAINER} $@
 }
 
-
 function create_sandbox() {
   docker ps -f "name=$CONTAINER" && docker rm -f $CONTAINER
   docker inspect --format='{{.Created}}' photon_build_spec:$VERSION.0
@@ -139,7 +138,7 @@ function create_sandbox() {
   # replace toybox with coreutils and install default build tools
   run "Replace toybox with coreutils" in_sandbox tdnf remove -y toybox
   run "Upgrade Packages" in_sandbox tdnf upgrade -y
-  run "Install default build tools" in_sandbox tdnf install -y rpm-build build-essential gmp-devel mpfr-devel tar sed findutils file gzip patch bzip2 createrepo
+  run "Install default build tools" in_sandbox tdnf install -y rpm-build build-essential gmp-devel mpfr-devel tar sed findutils file gzip patch bzip2 createrepo python3
   run "Create local repo in sandbox" echo -e "[local]\nname=VMWare Photon Linux Local\nbaseurl=file:///usr/src/photon/RPMS\nenabled=1\nskip_if_unavailable=1" | sed 1d | docker exec -i $CONTAINER sh -c 'cat > /etc/yum.repos.d/local.repo'
 
   run "Create build template image for future use" docker commit "$(docker ps -q -f "name=$CONTAINER")" photon_build_spec:$VERSION.0