Add option to add base user for Ubuntu distro

Author: guysoft

src/modules/base/config

@@ -20,13 +20,20 @@ if [ "${BASE_DISTRO}" == "ubuntu" ]; then
   [ -n "$BASE_ZIP_IMG" ] || BASE_ZIP_IMG=`ls -t $BASE_IMAGE_PATH/ubuntu-*.xz | head -n 1`
   # Default user ubuntu
   [ -n "$BASE_USER" ] || BASE_USER=ubuntu
+  
+  # Add base user if does not exist
+  [ -n "$BASE_ADD_USER" ] || BASE_ADD_USER=yes
+  # When adding a base user which password to use
+  [ -n "$BASE_USER_PASSWORD" ] || BASE_USER_PASSWORD=ubuntu
 elif [ "${BASE_DISTRO}" == "raspios64" ]; then
   [ -n "$BASE_ZIP_IMG" ] || BASE_ZIP_IMG=`ls -t $BASE_IMAGE_PATH/*-{raspbian,raspios}-*-arm64-*.zip | head -n 1`
+  [ -n "$BASE_ADD_USER" ] || BASE_ADD_USER=no
 else
   # Default image raspbian
   [ -n "$BASE_ZIP_IMG" ] || BASE_ZIP_IMG=`ls -t $BASE_IMAGE_PATH/*-{raspbian,raspios}*.zip | head -n 1`
   # Default user raspbian
   [ -n "$BASE_USER" ] || BASE_USER=pi
+  [ -n "$BASE_ADD_USER" ] || BASE_ADD_USER=no
 fi
 
 # Release compression

src/modules/base/start_chroot_script

@@ -33,6 +33,17 @@ if [ "${BASE_DISTRO}" == "ubuntu" ]; then
 
   #Undo prevent any installed services from automatically starting
   rm -r /usr/sbin/policy-rc.d || true
+  
+fi
+
+if [ "${BASE_ADD_USER}" == "yes" ]; then
+  if id -u "${BASE_USER}" >/dev/null 2>&1; then
+      echo "Base user exists, not adding"
+  else
+      echo "Adding base user ${BASE_USER}"
+      password=$(perl -e 'printf("%s\n", crypt($ARGV[0], "password"))' "${BASE_USER_PASSWORD}")
+      useradd -m -p "${password}" -s /bin/bash "${BASE_USER}"
+  fi
 fi
 
 if [ -n "$BASE_APT_PROXY" ]