Move host user specific code within if statement. Test uuid solution

dist/platforms/ubuntu/entrypoint.sh

@@ -1,22 +1,7 @@
 #!/usr/bin/env bash
 
-fullProjectPath="$GITHUB_WORKSPACE/$PROJECT_PATH"
-
-# Get host user/group info so we create files with the correct ownership
-USERNAME=$(stat -c '%U' "$fullProjectPath")
-USERID=$(stat -c '%u' "$fullProjectPath")
-GROUPNAME=$(stat -c '%G' "$fullProjectPath")
-GROUPID=$(stat -c '%g' "$fullProjectPath")
-
-groupadd -g $GROUPID $GROUPNAME
-useradd -u $USERID -g $GROUPID $USERNAME
-usermod -aG $GROUPNAME $USERNAME
-mkdir -p "/home/$USERNAME"
-chown $USERNAME:$GROUPNAME "/home/$USERNAME"
-
-# Normally need root permissions to access when using su
-chmod 777 /dev/stdout
-chmod 777 /dev/stderr
+# Ensure machine ID is randomized
+dbus-uuidgen > /etc/machine-id && mkdir -p /var/lib/dbus/ && ln -sf /etc/machine-id /var/lib/dbus/machine-id
 
 #
 # Prepare Android SDK, if needed
@@ -53,6 +38,30 @@ else
 fi
 
 if [[ "RUN_AS_HOST_USER" == "true" ]]; then
+  # Stop on error if we can't set up the user
+  set -e
+
+  fullProjectPath="$GITHUB_WORKSPACE/$PROJECT_PATH"
+
+  # Get host user/group info so we create files with the correct ownership
+  USERNAME=$(stat -c '%U' "$fullProjectPath")
+  USERID=$(stat -c '%u' "$fullProjectPath")
+  GROUPNAME=$(stat -c '%G' "$fullProjectPath")
+  GROUPID=$(stat -c '%g' "$fullProjectPath")
+
+  groupadd -g $GROUPID $GROUPNAME
+  useradd -u $USERID -g $GROUPID $USERNAME
+  usermod -aG $GROUPNAME $USERNAME
+  mkdir -p "/home/$USERNAME"
+  chown $USERNAME:$GROUPNAME "/home/$USERNAME"
+
+  # Normally need root permissions to access when using su
+  chmod 777 /dev/stdout
+  chmod 777 /dev/stderr
+
+  # Don't stop on error when running our scripts as error handling is baked in
+  set +e
+
   # Switch to the host user so we can create files with the correct ownership
   su $USERNAME -c "$SHELL -c 'source /steps/runsteps.sh'"
 else