Adding sources.

entrypoint.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/bash
+
+set -e
+
+# Let's set some defaults
+SU_USER="ubuntu"
+
+# Parse command line arguments
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -u|--user)
+            SU_USER="$2"
+            shift 2
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+# Check if the user exists
+if ! id -u "$SU_USER" >/dev/null 2>&1; then
+    useradd -m "$SU_USER"
+fi
+
+# Check if the home directory exists
+if [ ! -d "/home/$SU_USER" ]; then
+    echo "A home directory for $SU_USER does not exist. Exiting."
+    exit 1
+fi
+
+# Check user ownership of the home directory
+if [ "$(stat -c '%u' /home/$SU_USER)" -ne "$(id -u $SU_USER)" ]; then
+    # Change ownership of the home directory
+    chown $SU_USER:$SU_USER /home/$SU_USER
+fi
+
+# Switch to the specified user
+if [ $# -gt 0 ]; then
+    exec su $SU_USER -c "$@"
+else
+    exec su $SU_USER
+fi