Add /etc/os-release

This file is being read by some packages to find out on what
distribution they are running on.

This file needs to be included in every Core Update.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

config/rootfiles/common/aarch64/stage2

@@ -28,6 +28,7 @@ etc/modules.conf
 etc/mtab
 etc/nsswitch.conf
 #etc/opt
+etc/os-release
 etc/passwd
 etc/profile
 #etc/profile.d

config/rootfiles/common/stage2

@@ -28,6 +28,7 @@ etc/modules.conf
 etc/mtab
 etc/nsswitch.conf
 #etc/opt
+etc/os-release
 etc/passwd
 etc/profile
 #etc/profile.d

config/rootfiles/common/x86_64/stage2

@@ -28,6 +28,7 @@ etc/modules.conf
 etc/mtab
 etc/nsswitch.conf
 #etc/opt
+etc/os-release
 etc/passwd
 etc/profile
 #etc/profile.d

lfs/stage2

@@ -145,6 +145,15 @@ endif
 	# System release
 	echo "$(SYSTEM_RELEASE)" > /etc/system-release
 
+	# OS release
+	: >/etc/os-release
+	echo "NAME=\"$(NAME)\"" >> /etc/os-release
+	echo "VERSION=\"$(VERSION)\"" >> /etc/os-release
+	echo "ID=$(SNAME)" >> /etc/os-release
+	echo "VERSION_ID=2" >> /etc/os-release
+	echo "PRETTY_NAME=\"$(SYSTEM_RELEASE)\"" >> /etc/os-release
+	echo "ANSI_COLOR=\"0:31\"" >> /etc/os-release
+
 	# Pakfire
 	-mkdir -pv /opt/pakfire/db/core
 	echo "$(CORE)" > /opt/pakfire/db/core/mine