installation/install.sh: Fix a bug: handle automatically initramfs image's name changes.

installation/install.sh

@@ -9,6 +9,13 @@ if [ ! -d dracut.module ]; then
 fi
 
 PROJECT_DIR=`pwd`
+SOURCE_EFI_DIR=/boot/efi/EFI/
+TARGET_EFI_DIR=/EFI/
+SOURCE_EFI_DIR=`realpath -m $SOURCE_EFI_DIR`
+TARGET_EFI_DIR=`realpath -m $TARGET_EFI_DIR`
+SOURCE_IMAGE_DIR=$SOURCE_EFI_DIR/Linux/
+TARGET_IMAGE_DIR=$TARGET_EFI_DIR/Linux/
+dracut_output_file=dracut-output
 
 # This script assumes to be run by the root user (with /sbin in the path).
 
@@ -43,10 +50,16 @@ e2label $TARGET_ROOT_PARTITION ROOT
 efibootmgr -b 0 -B || true
 
 # Create an initramfs image
-dracut -c ./dracut.module/dracut.conf --force
+rm -f $dracut_output_file
+dracut -c ./dracut.module/dracut.conf --force |& tee -a $dracut_output_file
+# the next line parses dracut output and extracts the path of the newly generated image
+uefi_image_name=`grep "Creating image file" $dracut_output_file | sed -E "s|.*$SOURCE_IMAGE_DIR(.*)'.*|\1|g"`
 
 # Why? The boot manager seems to forget the boot option if this is not done.
-cp -r /boot/efi/EFI /EFI
+mkdir -p $TARGET_EFI_DIR
+cp -rv $SOURCE_EFI_DIR/* $TARGET_EFI_DIR
 
 # Set the image as a boot option
-efibootmgr --create --disk $TARGET_EFI_PARTITION --label "test_deploy" --loader /EFI/Linux/linux-5.10.0-11-amd64-7148af38f67e4d3d98495ccf849b82f4.efi
+efibootmgr --create --disk $TARGET_EFI_PARTITION --label "test_deploy" --loader $TARGET_IMAGE_DIR/$uefi_image_name
+
+echo "New initramfs image: "$TARGET_IMAGE_DIR/$uefi_image_name