embed build details into build as splash screen

Makefile

@@ -2,8 +2,16 @@ NAME := airgap
 IMAGE := local/$(NAME):latest
 TARGET := librem13v4
 GIT_DATETIME := \
-	$(shell git log -1 --format=%cd --date=format:'%Y-%m-%d %H:%M:%S')
-GIT_EPOCH := $(shell git log -1 --format=%at)
+	$(shell git log -1 --format=%cd --date=format:'%Y-%m-%d %H:%M:%S' config)
+GIT_REF := $(shell git log -1 --format=%H config)
+GIT_AUTHOR := $(shell git log -1 --format=%an config)
+GIT_KEY := $(shell git log -1 --format=%GP config)
+GIT_EPOCH := $(shell git log -1 --format=%at config)
+ifeq ($(strip $(shell git status --porcelain 2>/dev/null)),)
+	GIT_STATE=clean
+else
+	GIT_STATE=dirty
+endif
 OUT_DIR := build/buildroot/output/images
 docker = docker
 executables = $(docker)
@@ -95,6 +103,10 @@ contain := \
 		--env TARGET=$(TARGET) \
 		--env GIT_DATETIME="$(GIT_DATETIME)" \
 		--env GIT_EPOCH="$(GIT_EPOCH)" \
+		--env GIT_REF="$(GIT_REF)" \
+		--env GIT_AUTHOR="$(GIT_AUTHOR)" \
+		--env GIT_KEY="$(GIT_KEY)" \
+		--env GIT_STATE="$(GIT_STATE)" \
 		--security-opt seccomp=unconfined \
 		--volume $(PWD)/build:/home/build/build \
 		--volume $(PWD)/config:/home/build/config \

config/buildroot/board/librem13v4/grub.cfg

@@ -1,27 +1,27 @@
 set default="0"
 set timeout="10"
 
-menuentry "Buildroot (qwerty)" {
+menuentry "AirgapOS (qwerty)" {
 	linux /boot/bzImage root=/dev/sr0 keymap=qwerty/us
 	initrd /boot/initrd
 }
 
-menuentry "Buildroot (dvorak)" {
+menuentry "AirgapOS (dvorak)" {
 	linux /boot/bzImage root=/dev/sr0 keymap=dvorak
 	initrd /boot/initrd
 }
 
-menuentry "Buildroot (colemak)" {
+menuentry "AirgapOS (colemak)" {
 	linux /boot/bzImage root=/dev/sr0 keymap=colemak/en-latin9
 	initrd /boot/initrd
 }
 
-menuentry "Buildroot (qwertz)" {
+menuentry "AirgapOS (qwertz)" {
 	linux /boot/bzImage root=/dev/sr0 keymap=qwertz/de
 	initrd /boot/initrd
 }
 
-menuentry "Buildroot (azerty)" {
+menuentry "AirgapOS (azerty)" {
 	linux /boot/bzImage root=/dev/sr0 keymap=azerty/fr
 	initrd /boot/initrd
 }

config/buildroot/board/librem13v4/post-build.sh

@@ -8,4 +8,11 @@ BOARD_DIR="$(dirname $0)"
 
 cp -f ${BOARD_DIR}/grub.cfg ${TARGET_DIR}/boot/grub/grub.cfg
 
+echo "export GIT_REF=\"${GIT_REF}\"" > ${TARGET_DIR}/etc/environment
+echo "export GIT_AUTHOR=\"${GIT_AUTHOR}\"" >> ${TARGET_DIR}/etc/environment
+echo "export GIT_KEY=\"${GIT_KEY}\"" >> ${TARGET_DIR}/etc/environment
+echo "export GIT_DATETIME=\"${GIT_DATETIME}\"" >> ${TARGET_DIR}/etc/environment
+echo "export GIT_EPOCH=\"${GIT_EPOCH}\"" >> ${TARGET_DIR}/etc/environment
+echo "export GIT_STATE=\"${GIT_STATE}\"" >> ${TARGET_DIR}/etc/environment
+
 exit $?

config/buildroot/rootfs_overlay/etc/profile

@@ -0,0 +1,24 @@
+export EDITOR=/bin/vi
+export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
+export PS1="[\h \t] \\$ "
+source /etc/environment
+
+clear
+cat << "EOF"
+  ___       _                   _____ _____
+ / _ \     (_)                 |  _  /  ___|
+/ /_\ \_ __ _  __ _  __ _ _ __ | | | \ `--.
+|  _  | '__| |/ _` |/ _` | '_ \| | | |`--. \
+| | | | |  | | (_| | (_| | |_) \ \_/ /\__/ /
+\_| |_/_|  |_|\__, |\__,_| .__/ \___/\____/
+               __/ |     | |
+              |___/      |_|
+
+EOF
+echo "Build Details:"
+echo " - Date: $GIT_DATETIME"
+echo " - Tree State: $GIT_STATE"
+echo " - Committer: $GIT_AUTHOR"
+echo " - Commit: $GIT_REF"
+echo " - Key: $GIT_KEY"
+echo ""