Sysroot: Add build_and_upload.py

build/linux/sysroot_scripts/sysroot-creator-jessie.sh

Index: build/linux/sysroot_scripts/sysroot-creator-jessie.sh
diff --git a/build/linux/sysroot_scripts/sysroot-creator-jessie.sh b/build/linux/sysroot_scripts/sysroot-creator-jessie.sh
index 161744251a406579507a91091c90005229a4ea04..801ddf6638922c2b05340bd91c7cbf6d08e4f337 100755
--- a/build/linux/sysroot_scripts/sysroot-creator-jessie.sh
+++ b/build/linux/sysroot_scripts/sysroot-creator-jessie.sh
@@ -3,7 +3,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-SCRIPT_DIR=$(cd $(dirname $0) && pwd)
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 DISTRO=debian
 DIST=jessie
@@ -16,7 +16,7 @@ APT_REPO=http://http.us.debian.org/debian
 #   export KEYS="518E17E1 46925553 2B90D010"
 #   gpg --recv-keys $KEYS
 #   gpg --output ./debian-archive-jessie-stable.gpg --export $KEYS
-KEYRING_FILE=${SCRIPT_DIR}/debian-archive-jessie-stable.gpg
+KEYRING_FILE="${SCRIPT_DIR}/debian-archive-jessie-stable.gpg"
 
 HAS_ARCH_AMD64=1
 HAS_ARCH_I386=1
@@ -253,4 +253,4 @@ DEBIAN_PACKAGES_ARM64="
   libthai0
 "
 
-. ${SCRIPT_DIR}/sysroot-creator.sh
+. "${SCRIPT_DIR}/sysroot-creator.sh"