first-fix

packaging/java/scripts/control/deb/preinst

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+set -e
+
+if ! getent group ${pkg.user} >/dev/null; then
+    addgroup --system ${pkg.user}
+fi
+
+if ! getent passwd ${pkg.user} >/dev/null; then
+    adduser --quiet \
+            --system \
+            --ingroup ${pkg.user} \
+            --quiet \
+            --disabled-login \
+            --disabled-password \
+            --home ${pkg.installFolder} \
+            --no-create-home \
+            -gecos "Thingsboard application" \
+            ${pkg.user}
+fi
+
+exit 0