adding a cleaning step start fresh

Dockerfile

@@ -27,6 +27,7 @@ RUN \
 RUN gem install gauntlt --no-rdoc --no-ri
 
 # Install Attack tools
+WORKDIR /opt
 
 # arachni
 RUN wget https://github.com/Arachni/arachni/releases/download/v1.5.1/${ARACHNI_VERSION}-linux-x86_64.tar.gz && \
@@ -35,8 +36,6 @@ RUN wget https://github.com/Arachni/arachni/releases/download/v1.5.1/${ARACHNI_V
     ln -s /usr/local/${ARACHNI_VERSION}/bin/* /usr/local/bin/
 
 # Nikto
-WORKDIR /opt
-
 RUN apt-get update \
         && apt-get install -y libtimedate-perl libnet-ssleay-perl \
         && rm -rf /var/lib/apt/lists/*
@@ -48,5 +47,4 @@ RUN git clone --depth=1 https://github.com/sullo/nikto.git && \
     chmod +x nikto.pl && \
     ln -s /opt/nikto/program/nikto.pl /usr/local/bin/nikto
 
-
 ENTRYPOINT [ "/usr/local/bin/gauntlt" ]

Makefile

@@ -8,6 +8,10 @@ clean:
 	@echo "Removing unused docker containers..."
 	@./docker-clean.sh
 
+clean-all: clean
+	@echo "Removing gauntlt image..."
+	@docker rmi gauntlt
+
 interactive:
 	@docker run -it --entrypoint /bin/bash gauntlt
 
@@ -19,6 +23,7 @@ help:
 	@echo "the help menu"
 	@echo "  make build"
 	@echo "  make clean"
+	@echo "  make clean-all"
 	@echo "  make help"
 	@echo "  make install-stub"
 	@echo "  make interactive"