diff --git a/scripts/docker/command/docker_run_install.sh b/scripts/docker/command/docker_run_install.sh
index 10158e1..5d57933 100755
--- a/scripts/docker/command/docker_run_install.sh
+++ b/scripts/docker/command/docker_run_install.sh
@@ -39,22 +39,27 @@ dockerCommandRunInstallUser()
         "PATH=/home/$CFG_DOCKER_INSTALL_USER/bin:/usr/bin:/bin:/usr/local/bin"
     )
 
+    # Run from the install user's HOME, not the caller's cwd. At install time the
+    # caller is root in /root, which the unprivileged user can't enter, so
+    # cwd-sensitive tools error (e.g. find: "Failed to change directory: /root").
+    local run_cwd="/home/$CFG_DOCKER_INSTALL_USER"
+
     # --argv: exec the remaining args verbatim (no shell re-parse) so regex/
     # quotes/backslashes in arguments (e.g. sed scripts) survive intact. Default:
     # treat $1 as a shell snippet via bash -c (needed for pipes/redirects/
     # systemctl --user/etc.).
     if [ -n "$argv_mode" ]; then
         if [ -n "$silent_flag" ]; then
-            sudo -u "$CFG_DOCKER_INSTALL_USER" env "${run_env[@]}" "$@" >/dev/null 2>&1
+            sudo -u "$CFG_DOCKER_INSTALL_USER" env --chdir="$run_cwd" "${run_env[@]}" "$@" >/dev/null 2>&1
         else
-            sudo -u "$CFG_DOCKER_INSTALL_USER" env "${run_env[@]}" "$@"
+            sudo -u "$CFG_DOCKER_INSTALL_USER" env --chdir="$run_cwd" "${run_env[@]}" "$@"
         fi
     else
         local remote_command="$1"
         if [ -n "$silent_flag" ]; then
-            sudo -u "$CFG_DOCKER_INSTALL_USER" env "${run_env[@]}" bash -c "$remote_command" >/dev/null 2>&1
+            sudo -u "$CFG_DOCKER_INSTALL_USER" env --chdir="$run_cwd" "${run_env[@]}" bash -c "$remote_command" >/dev/null 2>&1
         else
-            sudo -u "$CFG_DOCKER_INSTALL_USER" env "${run_env[@]}" bash -c "$remote_command"
+            sudo -u "$CFG_DOCKER_INSTALL_USER" env --chdir="$run_cwd" "${run_env[@]}" bash -c "$remote_command"
         fi
     fi
 }