Properly copy resolv.conf file from host

Properly copy resolv.conf file from host to jail by following the symlink, and cleanup.

The resolv.conf file in some compact/embedded distributions is a symlink, hence some users complaint about jails has no internet access, this workaround does fix this problem.

usr/local/share/bastille/cp.sh

@@ -95,7 +95,14 @@ for _jail in ${JAILS}; do
     host_path="${HOST_PATH}"
     jail_path="$(echo ${bastille_jailsdir}/${_jail}/root/${JAIL_PATH} | sed 's#//#/#g')"
 
-    if ! cp "${OPTION}" "${host_path}" "${jail_path}"; then
+    # Workaround to properly copy host resolv.conf to jail if the host file is a symlink.
+    if [ "${host_path}" = "${bastille_resolv_conf}" ] && [ -L "${host_path}" ]; then
+        _option="${OPTION}L"
+    else
+        _option="${OPTION}"
+    fi
+
+    if ! cp "${_option}" "${host_path}" "${jail_path}"; then
         ERRORS=$((ERRORS + 1))
         error_continue "[ERROR]: CP failed: ${host_path} -> ${jail_path}"
     fi