From b40b4758322de409ef3dafae5d56cb4c8e38b0c7 Mon Sep 17 00:00:00 2001
From: Philippe PITTOLI <p.pittoli@unistra.fr>
Date: Mon, 24 Sep 2018 22:47:35 +0200
Subject: [PATCH] make alpine chroot

---
 bash/make-alpine-chroot.sh | 65 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 bash/make-alpine-chroot.sh

diff --git a/bash/make-alpine-chroot.sh b/bash/make-alpine-chroot.sh
new file mode 100755
index 0000000..707f783
--- /dev/null
+++ b/bash/make-alpine-chroot.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+
+# TODO: good codebase, need parameters and make a more generic tool
+
+APKPKT=apk-tools-static-2.10.1-r0.apk
+
+mirror=http://uk.alpinelinux.org/alpine/
+MAINREP=/media/fast/al
+CHROOT=$MAINREP/chroot
+PACKAGES="vim zsh"
+POSTPACKAGES="alpine-sdk git openssh openssl openssl-dev crystal"
+
+chroot_install(){
+	mkdir -p $CHROOT
+	cd ${MAINREP}/
+
+	if [ -f ${APKPKT} ]; then
+		echo "apk already downloaded"
+	else
+		wget ${mirror}/latest-stable/main/`uname -p`/${APKPKT}
+		tar -xzf ${APKPKT}
+	fi
+
+	${MAINREP}/sbin/apk.static -X ${mirror}/latest-stable/main -U --allow-untrusted --root ${CHROOT} --initdb add alpine-base $PACKAGES
+	cp /etc/resolv.conf $CHROOT/etc/
+	cp -r ~/.zsh* ~/.vim* ${CHROOT}/root
+	echo export PS1=\"\(chroot\) \$PS1\"  >> ${CHROOT}/root/.zshrc
+
+	cat << END > $CHROOT/etc/apk/repositories
+http://uk.alpinelinux.org/alpine/latest-stable/main
+http://uk.alpinelinux.org/alpine/latest-stable/community
+http://uk.alpinelinux.org/alpine/edge/main
+http://uk.alpinelinux.org/alpine/edge/community
+END
+}
+
+chroot_mount(){
+	mount -t proc /proc ${CHROOT}/proc/
+	mount -o bind /sys  ${CHROOT}/sys/
+	mount -o bind /dev  ${CHROOT}/dev/
+}
+
+chroot_env(){
+	chroot ${CHROOT} /bin/zsh -l
+}
+
+chroot_post(){
+	${MAINREP}/sbin/apk.static --root ${CHROOT} add $POSTPACKAGES
+	# chroot ${CHROOT} /bin/zsh -l "apk update && apk upgrade && apk add $POSTPACKAGES"
+}
+
+ask(){
+	echo -en "$1? [YyNn] (n): "
+	read V ; echo $V | grep "[Yy]" >/dev/null
+	if [ $? -eq 0 ] ; then
+		echo -en "doing $1..." ; $1
+	else
+		echo "not doing $1"
+	fi
+}
+
+ask chroot_install
+ask chroot_mount
+ask chroot_post
+ask chroot_env