Attempt at making init scripts container aware

SNAP/usher

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e
 
@@ -7,25 +7,22 @@ case $1 in
     exit 0
     ;;
   postinst)
-    if [[ ${TARGET} ]]; then
-      chroot ${TARGET} update-rc required
-    else
-      update-rc required
+    update-rc required
+
+    if [ ! -f /etc/fstab ]; then
+      cp /usr/share/initscripts/fstab /etc/fstab
     fi
 
-    if [ ! -f ${TARGET}/etc/modules.conf ]; then
-      cp ${TARGET}/usr/share/initscripts/modules.conf \
-        ${TARGET}/etc/modules.conf
+    if [ ! -f /etc/modules.conf ]; then
+      cp /usr/share/initscripts/modules.conf /etc/modules.conf
     fi
 
-    if [ ! -f ${TARGET}/etc/default/halt ]; then
-      cp ${TARGET}/usr/share/initscripts/halt.default \
-        ${TARGET}/etc/default/halt
+    if [ ! -f /etc/default/halt ]; then
+      cp /usr/share/initscripts/halt.default /etc/default/halt
     fi
 
-    if [ ! -f ${TARGET}/etc/default/rcS ]; then
-      cp ${TARGET}/usr/share/initscripts/rcS.default \
-        ${TARGET}/etc/default/rcS
+    if [ ! -f /etc/default/rcS ]; then
+      cp /usr/share/initscripts/rcS.default /etc/default/rcS
     fi
     ;;
   prerm)