docker/debian: Use USER_UID (not BUILD_UID) for current consistency (envoyproxy#452)

Signed-off-by: Ryan Northey <ryan@synca.io>

Author: phlax

docker/linux/debian/docker-entrypoint.sh

@@ -3,8 +3,8 @@
 set -e -o pipefail
 
 
-if [[ -z "${BUILD_UID}" ]]; then
-    echo "BUILD_UID must be set" >&2
+if [[ -z "${USER_UID}" ]]; then
+    echo "USER_UID must be set" >&2
 fi
 
 start_docker () {
@@ -26,7 +26,7 @@ get_docker_info () {
 
 set_user_permissions () {
     mkdir -p /home/envoybuild/.docker
-    usermod -u "${BUILD_UID}" envoybuild &> /dev/null
+    usermod -u "${USER_UID}" envoybuild &> /dev/null
     chown envoybuild:envoybuild /home/envoybuild
     if [[ -e /home/envoybuild/.cache ]]; then
         chown envoybuild:envoybuild /home/envoybuild/.cache

docker/linux/debian/entrypoint.sh

@@ -2,7 +2,7 @@
 
 set -e -o pipefail
 
-usermod -u "${BUILD_UID}" envoybuild &> /dev/null
+usermod -u "${USER_UID}" envoybuild &> /dev/null
 chown envoybuild:envoybuild /home/envoybuild
 if [[ -e /home/envoybuild/.cache ]]; then
     chown envoybuild:envoybuild /home/envoybuild/.cache

docker/linux/debian/llvm-entrypoint.sh

@@ -2,7 +2,7 @@
 
 set -e -o pipefail
 
-usermod -u "${BUILD_UID}" envoybuild &> /dev/null
+usermod -u "${USER_UID}" envoybuild &> /dev/null
 chown envoybuild:envoybuild /home/envoybuild
 export PATH="/opt/llvm/bin:${PATH}"
 if [[ -e /home/envoybuild/.cache ]]; then