diff --git a/bin/ovpn_copy_server_files b/bin/ovpn_copy_server_files
index be92f0e..42fa827 100755
--- a/bin/ovpn_copy_server_files
+++ b/bin/ovpn_copy_server_files
@@ -2,6 +2,8 @@
 ## @licence MIT <http://opensource.org/licenses/MIT>
 ## @author Copyright (C) 2015 Robin Schneider <ypid@riseup.net>
 
+set -e
+
 if [ -z "$OPENVPN" ]; then
     export OPENVPN="$PWD"
 fi
@@ -10,27 +12,30 @@ if ! source "$OPENVPN/ovpn_env.sh"; then
     exit 1
 fi
 
-TARGET="/tmp/openvpn_${OVPN_CN}"
+TARGET="$OPENVPN/server"
 if [ -n "$1" ]; then
     TARGET="$1"
-else
-    TARGET="$OPENVPN/server"
 fi
+mkdir -p "${TARGET}"
 
 ## Ensure that no other keys then the one for the server is present.
-rm --recursive --force "$TARGET/pki/private" "$TARGET/pki/issued"
+rm -rf "$TARGET/pki/private" "$TARGET/pki/issued"
+
+FILES=(
+    "openvpn.conf"
+    "ovpn_env.sh"
+    "pki/private/${OVPN_CN}.key"
+    "pki/issued/${OVPN_CN}.crt"
+    "pki/dh.pem"
+    "pki/ta.key"
+    "pki/ca.crt"
+)
+
+# rsync isn't available to keep size down
+# cp --parents isn't in busybox version
+# hack the directory structure with tar
+tar cf - -C "${OPENVPN}" "${FILES[@]}" | tar xvf - -C "${TARGET}"
 
-echo "
-openvpn.conf
-ovpn_env.sh
-pki/private/${OVPN_CN}.key
-pki/issued/${OVPN_CN}.crt
-pki/dh.pem
-pki/ta.key
-pki/ca.crt
-" | rsync --recursive --verbose \
-    --files-from - \
-    "$OPENVPN/" "$TARGET"
 mkdir -p "$TARGET/ccd"
 
 echo "Created the openvpn configuration for the server: $TARGET"
diff --git a/tests/paranoid.sh b/tests/paranoid.sh
new file mode 100755
index 0000000..e9da883
--- /dev/null
+++ b/tests/paranoid.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -ex
+
+IMG=${IMG:-kylemanna/openvpn}
+
+temp=$(mktemp -d)
+
+pushd $temp
+
+SERV_IP=$(ip -4 -o addr show scope global  | awk '{print $4}' | sed -e 's:/.*::' | head -n1)
+
+docker run --net=none --rm -t -i -v $PWD:/etc/openvpn $IMG ovpn_genconfig -u udp://$SERV_IP
+
+docker run --net=none --rm -t -i -v $PWD:/etc/openvpn -e "EASYRSA_BATCH=1" -e "EASYRSA_REQ_CN=Travis-CI Test CA" kylemanna/openvpn ovpn_initpki nopass
+
+docker run --net=none --rm -t -i -v $PWD:/etc/openvpn $IMG ovpn_copy_server_files
+
+popd
+# Can't delete the temp directory as docker creates some files as root.
+# Just let it die with the test instance.
+rm -rf $temp || true