Add install script

README.md

@@ -1,5 +1,20 @@
 # ConfigServer Security & Firewall (CSF) - Docker
 
-Install: 
+## Installation
+### Requirement
+Make sure to use the scripts from `https://github.com/juliengk/csf-pre_post_sh`
 
-cp csfpost.sh /usr/local/csf/bin/csfpost.sh
+### Install
+Installation is quite straightforward:
+
+```
+# cd /usr/local/src
+# git clone https://github.com/juliengk/csf-post-docker.git
+# cd csf-post-docker
+# sh install.sh
+```
+
+## User Feedback
+### Issues
+
+If you have any problems with or questions about this image, please contact us through a [GitHub](https://github.com/juliengk/csf-post-docker/issues) issue.

docker.sh

@@ -1,7 +1,6 @@
 #!/bin/bash
 
-chain_exists()
-{
+chain_exists() {
     [ $# -lt 1 -o $# -gt 2 ] && {
         echo "Usage: chain_exists <chain_name> [table]" >&2
         return 1

install.sh

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+SCRIPT_NAME="docker.sh"
+
+CSF_CUSTOM_PATH="/usr/local/include/csf"
+CSFPOSTD_PATH="${CSF_CUSTOM_PATH}/post.d"
+
+
+if [ ! -d ${CSF_CUSTOM_PATH} ]; then
+	echo "** CSF-PRE_POST_SH is not installed **"
+	echo "Get it from https://github.com/juliengk/csf-pre_post_sh"
+
+	exit 1
+fi
+
+PREFIX="None"
+if [ "$1" == "-p" ] || [ "$1" == "--prefix" ]; then
+	PREFIX=$2
+
+	shift 2
+fi
+
+SCRIPT_NAME_FINAL="${SCRIPT_NAME}"
+if [ ${PREFIX} != "None" ]; then
+	SCRIPT_NAME_FINAL="${PREFIX}_${SCRIPT_NAME}"
+fi
+
+if [ -f ${CSFPOSTD_PATH}/${SCRIPT_NAME_FINAL} ]; then
+	md5_0=`md5sum docker.sh | awk '{ print $1 }'`
+	md5_1=`md5sum ${CSFPOSTD_PATH}/${SCRIPT_NAME_FINAL} | awk '{ print $1 }'`
+
+	if [ ${md5_0} == ${md5_1} ]; then
+		exit 0
+	else
+		ok=0
+		while [ ${ok} -eq 0 ]; do
+			clear
+
+			echo "** Warning! **"
+			echo "A different version of the script is already present"
+			echo "Do you want to replace it (y/n)?"
+
+			read answer
+
+			if [ ${answer} == "y" -o ${answer} == "n" ]; then
+				ok=1
+			fi
+		done
+
+		if [ ${answer} == "n" ]; then
+			exit 1
+		fi
+	fi
+fi
+
+cp -f ${SCRIPT_NAME} ${CSFPOSTD_PATH}/${SCRIPT_NAME_FINAL}
+chown root:root ${CSFPOSTD_PATH}/${SCRIPT_NAME_FINAL}
+chmod 700 ${CSFPOSTD_PATH}/${SCRIPT_NAME_FINAL}
+
+exit 0