Update docker container

- chromium: add a dummy layer to get an updated container timestamp
- ipterm: add a dummy layer to get an updated container timestamp
- kalilinux: replaced outdated python-scapy by python3-scapy

docker/chromium/Dockerfile

@@ -1,4 +1,7 @@
 FROM jess/chromium
 MAINTAINER developers@gns3.net
 
+# add a dummy layer to get an updated container timestamp
+RUN /bin/true
+
 VOLUME /data

docker/ipterm/cli/Dockerfile

@@ -2,5 +2,8 @@
 
 FROM gns3/ipterm-base
 
+# add a dummy layer to get an updated container timestamp
+RUN /bin/true
+
 VOLUME [ "/root" ]
 CMD [ "sh", "-c", "cd; exec bash -i" ]

docker/kalilinux/Dockerfile

@@ -1,6 +1,6 @@
 FROM kalilinux/kali-rolling
 
-RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y tshark && apt-get install -y --no-install-recommends metasploit-framework nmap hydra sqlmap telnet openssh-client dnsutils yersinia ettercap-text-only cisco-global-exploiter cisco-auditing-tool snmp dsniff dnschef fping hping3 python-scapy\
+RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y tshark && apt-get install -y --no-install-recommends metasploit-framework nmap hydra sqlmap telnet openssh-client dnsutils yersinia ettercap-text-only cisco-global-exploiter cisco-auditing-tool snmp dsniff dnschef fping hping3 python3-scapy\
     && rm -rf /var/lib/apt/lists/*
 
 CMD /bin/bash 

docker/kalilinux/README.md

@@ -20,7 +20,7 @@ metasploit-framework
  * fping
  * hping3
  * tshark
- * python-scapy
+ * python3-scapy
  * yersinia
 
 ## Build and publish the Images

docker/kalilinux/index-1.html

@@ -19,7 +19,7 @@ metasploit-framework
  * fping
  * hping3
  * tshark
- * python-scapy
+ * python3-scapy
  * yersinia</p>
 <h2 id="build-and-publish-the-images">Build and publish the Images</h2>
 <p>First the base image has to be created:</p>