feat: mount main partition for cloud-init configuration

provision-pi.sh

@@ -20,8 +20,25 @@ EOF
     resize2fs -p "$device"p$partnr
 }
 
+mount_temporary () {
+    partnr=$1
+    temp_mnt_point=$(mktemp -d)
+    mount "$SD_CARD"p"$partnr" $temp_mnt_point
+    echo $temp_mnt_point
+}
+
+unmount_temporary () {
+    handle=$1
+    umount $1
+    rmdir $1
+}
+
 read -e -p "Compressed Image file: " IMG_FILE
 read -e -p "SD Card: " SD_CARD
 
 flash_sd "$IMG_FILE" "$SD_CARD"
 enlarge_partition "$SD_CARD"
+mnt_handle=$(mount_temporary "1")
+
+
+unmount_temporary $mnt_handle