Fix build with Docker

build.sh

@@ -27,16 +27,27 @@ echo -e "
 "
 
 # Use system live-build if running on Debian
+apt-get update && apt-get install -y lsb-release
+
 dist="$(lsb_release -i -s)"
 
 if [ $dist == "Debian" ]; then
-  apt-get install -y binutils zstd live-build
+  apt-get install -y binutils patch zstd live-build
   dpkg -i ./debs/ubuntu-keyring*.deb
 else
-  apt-get install -y binutils zstd debootstrap
+  apt-get install -y binutils patch zstd debootstrap
   dpkg -i ./debs/*.deb
 fi
 
+# TODO: This patch was submitted upstream at:
+# https://salsa.debian.org/live-team/live-build/-/merge_requests/255
+# This can be removed when our Debian container has a version containing this fix
+patch -d /usr/lib/live/build/ < live-build-fix-shim-remove.patch
+
+# TODO: This can be removed when our Debian container has debootstrap 1.0.124 or later
+# It's needed to support the new zstd .deb package compression that Ubuntu is doing
+patch -d /usr/share/debootstrap/ < debootstrap-backport-zstd-support.patch
+
 # Increase number of blocks for creating efi.img.
 # This prevents error with "Disk full" on the lb binary_grub-efi stage
 patch -d /usr/lib/live/build/ < increase_number_of_blocks.patch

debootstrap-backport-zstd-support.patch

@@ -0,0 +1,18 @@
+--- /usr/share/debootstrap/functions.orig	2021-10-23 23:13:10.576805331 +0000
++++ /usr/share/debootstrap/functions	2021-10-23 23:14:05.465350379 +0000
+@@ -974,6 +974,7 @@
+ 	case "$tarball" in
+ 		control.tar.gz) cat_cmd=zcat ;;
+ 		control.tar.xz) cat_cmd=xzcat ;;
++		control.tar.zst) cat_cmd=zstdcat ;;
+ 		control.tar)    cat_cmd=cat ;;
+ 		*) error 1 UNKNOWNCONTROLCOMP "Unknown compression type for %s in %s" "$tarball" "$pkg" ;;
+ 	esac
+@@ -996,6 +997,7 @@
+ 		data.tar.gz)  cat_cmd=zcat ;;
+ 		data.tar.bz2) cat_cmd=bzcat ;;
+ 		data.tar.xz)  cat_cmd=xzcat ;;
++		data.tar.zst) cat_cmd=zstdcat ;;
+ 		data.tar)     cat_cmd=cat ;;
+ 		*) error 1 UNKNOWNDATACOMP "Unknown compression type for %s in %s" "$tarball" "$pkg" ;;
+ 	esac

etc/auto/config

@@ -44,6 +44,7 @@ lb config noauto \
     --zsync false \
     --security true \
     --updates true \
+    --debootstrap-options="--extractor=ar" \
     "${@}"
 
 # replace channel and suite

live-build-fix-shim-remove.patch

@@ -0,0 +1,16 @@
+--- binary_grub-efi	2021-04-02 15:43:54.000000000 +0000
++++ binary_grub-efi_v2	2021-10-23 22:43:57.314540341 +0000
+@@ -280,8 +280,12 @@
+ 		# Saving cache
+ 		Save_package_cache binary
+
+-		# Removing depends
++		# Removing depends, some bootloader packages are marked as Protected/Important
++		# in Ubuntu, so temporarily add an apt flag to allow them to be removed
++		PRE_APT_OPTIONS="${APT_OPTIONS}"
++		APT_OPTIONS="${APT_OPTIONS} --allow-remove-essential"
+ 		Remove_packages
++		APT_OPTIONS="${PRE_APT_OPTIONS}"
+ 		;;
+
+ 	false)