diff --git a/docker-compose.yml b/docker-compose.yml
index 6bcdc30..1f452e1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,8 +10,8 @@ services:
       - /bin/bash
       - /etc/fail2ban/entrypoint.sh
     volumes:
-      - ./fail2ban/entrypoint.sh:/etc/fail2ban/entrypoint.sh
-      - ./fail2ban/sshd_config:/etc/ssh/sshd_config
+      - ./fail2ban/entrypoint.sh:/etc/fail2ban/entrypoint.sh:ro
+      - ./fail2ban/sshd_config:/etc/ssh/sshd_config:ro
     ports:
       - 22:22/tcp
       - 2222:2222/tcp
diff --git a/fail2ban/entrypoint.sh b/fail2ban/entrypoint.sh
index a1bc394..10ce10f 100644
--- a/fail2ban/entrypoint.sh
+++ b/fail2ban/entrypoint.sh
@@ -12,19 +12,19 @@ REMOTE_IP=\"\$1\"
 SENDER_MAIL=\"\$2\"
 DEST_MAIL=\"\$3\"
 LOGFILE=\"\$4\"
-DATE=\$\(date\)
-WHOIS_OUTPUT=\$\(whois \$REMOTE_IP\)
-REVERSE_IP=\$\(echo \$REMOTE_IP | awk 'BEGIN{FS=\".\";ORS=\".\"} {for \(i = NF; i > 0; i--\){print \$i}}'\)
-LOG_LINES=\$\(grep \$REMOTE_IP \$LOGFILE\)
+DATE=\$(date)
+WHOIS_OUTPUT=\$(whois \$REMOTE_IP)
+REVERSE_IP=\$(echo \$REMOTE_IP | awk 'BEGIN{FS=\".\";ORS=\".\"} {for (i = NF; i > 0; i--){print \$i}}')
+LOG_LINES=\$(grep \$REMOTE_IP \$LOGFILE)
 BANNED_IP_PATH=\"/var/tmp/fail2ban_banned_ips\"
 
 # Skip sending email when an email was already sent out for that IP the last 24hours
 if ! [ -d \$BANNED_IP_PATH ]; then mkdir \$BANNED_IP_PATH; else find \${BANNED_IP_PATH}/ -mtime +30 -type f -delete; fi
-if [ -n \"\$\(find \${BANNED_IP_PATH}/\$REMOTE_IP -mtime -1 2>/dev/null\)\" ]; then exit 0; else touch \${BANNED_IP_PATH}/\$REMOTE_IP; fi
+if [ -n \"\$(find \${BANNED_IP_PATH}/\$REMOTE_IP -mtime -1 2>/dev/null)\" ]; then exit 0; else touch \${BANNED_IP_PATH}/\$REMOTE_IP; fi
 
 # Get the Abuse email address from Abusix
-if DNS_REPLY=\$\(host -t TXT \${REVERSE_IP}abuse-contacts.abusix.org\); then
-  ABUSE_ADDR=\$\(echo \$DNS_REPLY | grep -Eio '\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b' | paste -sd \",\"\)
+if DNS_REPLY=\$(host -t TXT \${REVERSE_IP}abuse-contacts.abusix.org); then
+  ABUSE_ADDR=\$(echo \$DNS_REPLY | grep -Eio '\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b' | paste -sd \",\")
 fi
 
 # Send email
@@ -44,7 +44,7 @@ WHOIS report FYI:
 
 Thanks for your time and curiosity... take care with botnets...
 - ANTIBOTNET SYSTEM -
-together will do a better and free world :-\)
+together will do a better and free world :-)
 from postmaster@$DOMAIN
 by www.$DOMAIN\"
 fi" > fail2ban_abuse_mail.sh