Hello @wickett , @karthequian
Same here... the cause is apt-get installing max Ruby 2.3.1 and dependencies requiring Ruby >= 2.4.0 after the latest fix.
@dehvCurtis, @JoelMVanDyk, @svikram1707
I managed to fix it for the purpose of the training but I'm not a coder so be careful. Here are the changes I made to dockerfile:
# Install Ruby and other OS stuff
RUN apt-get update && \
# added the row below to add a repo later
apt-get install -y software-properties-common && \
apt-get install -y build-essential \
bzip2 \
ca-certificates \
curl \
gcc \
git \
libcurl3 \
libcurl4-openssl-dev \
wget \
zlib1g-dev \
libfontconfig \
libxml2-dev \
libxslt1-dev \
make \
python-pip \
python2.7 \
python2.7-dev \
# ruby \
# ruby-dev \
# ruby-bundler && \
&& rm -rf /var/lib/apt/lists/*
RUN apt-add-repository ppa:brightbox/ruby-ng #added
RUN apt-get update #added
RUN apt-get install ruby2.4 ruby2.4-dev -y #added
RUN ruby --version #test if ruby version is right

# Install Gauntlt

RUN ruby -v #test if ruby version is right
RUN gem install rake
RUN gem install ffi -v 1.9.18
RUN apt-get upgrade -y #added because you get a request to upgrade
RUN gem install gauntlt --no-rdoc --no-ri

from gauntlt-docker.

I get pretty much the same, even though when I do:

"ruby -v"

I get:

ruby 2.7.1p83. (2020-03-31 revision a0c7c23c9c). [x86_linux]

from gauntlt-docker.

same. Tried on both Ubuntu 18.04 and RHEL 8

Done installing documentation for ffi after 24 seconds
1 gem installed
db1512af6d6d9eb30e2357e20e971ee3655538dfa48cece018277859e51949b7
STEP 7: RUN gem install gauntlt --no-rdoc --no-ri
Fetching: trollop-2.9.10.gem (100%)
!    The 'trollop' gem has been deprecated and has been replaced by 'optimist'.
!    See: https://rubygems.org/gems/optimist
!    And: https://github.com/ManageIQ/optimist
Successfully installed trollop-2.9.10
Fetching: mini_portile2-2.4.0.gem (100%)
Successfully installed mini_portile2-2.4.0
Fetching: nokogiri-1.10.10.gem (100%)
Building native extensions.  This could take a while...
Successfully installed nokogiri-1.10.10
Fetching: rspec-support-3.9.3.gem (100%)
Successfully installed rspec-support-3.9.3
Fetching: diff-lcs-1.4.4.gem (100%)
Successfully installed diff-lcs-1.4.4
Fetching: rspec-expectations-3.9.2.gem (100%)
Successfully installed rspec-expectations-3.9.2
Fetching: childprocess-4.0.0.gem (100%)
ERROR:  Error installing gauntlt:
	childprocess requires Ruby version >= 2.4.0.
Error: error building at STEP "RUN gem install gauntlt --no-rdoc --no-ri": error while running runtime: exit status 1
make: *** [Makefile:5: build] Error 125

from gauntlt-docker.

Hello @wickett , @karthequian
Same here... the cause is apt-get installing max Ruby 2.3.1 and dependencies requiring Ruby >= 2.4.0 after the latest fix.
@dehvCurtis, @JoelMVanDyk, @svikram1707
I managed to fix it for the purpose of the training but I'm not a coder so be careful. Here are the changes I made to dockerfile:
# Install Ruby and other OS stuff
RUN apt-get update && \
# added the row below to add a repo later
apt-get install -y software-properties-common && \
apt-get install -y build-essential \
bzip2 \
ca-certificates \
curl \
gcc \
git \
libcurl3 \
libcurl4-openssl-dev \
wget \
zlib1g-dev \
libfontconfig \
libxml2-dev \
libxslt1-dev \
make \
python-pip \
python2.7 \
python2.7-dev \
# ruby \
# ruby-dev \
# ruby-bundler && \
&& rm -rf /var/lib/apt/lists/*
RUN apt-add-repository ppa:brightbox/ruby-ng #added
RUN apt-get update #added
RUN apt-get install ruby2.4 ruby2.4-dev -y #added
RUN ruby --version #test if ruby version is right

# Install Gauntlt

RUN ruby -v #test if ruby version is right
RUN gem install rake
RUN gem install ffi -v 1.9.18
RUN apt-get upgrade -y #added because you get a request to upgrade
RUN gem install gauntlt --no-rdoc --no-ri

thanks so much! I'll give it a try today.

from gauntlt-docker.

So, got a lot farther, now down to step 14/30. But, it starts throwing errors again there at

RUN gem install ffi -v 1.9.18

says;

[91mERROR: Error installing ffi:
ERROR: Failed to build gem native extension.

current directory: /var/lib/gems/2.4.0/gems/ffi-1.13.1/ext/ffi_c

I've also tried without the -v flag, with the same result.

Any help is appreciated...

from gauntlt-docker.

from gauntlt-docker.

This works, as long as I build on Ubuntu (18 or greater), not Fedora.

from gauntlt-docker.

So, got a lot farther, now down to step 14/30. But, it starts throwing errors again there at

RUN gem install ffi -v 1.9.18

says;

[91mERROR: Error installing ffi:
ERROR: Failed to build gem native extension.

current directory: /var/lib/gems/2.4.0/gems/ffi-1.13.1/ext/ffi_c

I've also tried without the -v flag, with the same result.

Any help is appreciated...

I have done some changes into dockerfile:
FROM ubuntu:16.04
MAINTAINER [email protected]

ARG ARACHNI_VERSION=arachni-1.5.1-0.5.12

Install Ruby and other OS stuff

RUN apt-get update &&
apt-get install -y build-essential
bzip2
ca-certificates
curl
gcc
git
libcurl3
libcurl4-openssl-dev
wget
zlib1g-dev
libfontconfig
libxml2-dev
libxslt1-dev
make
python-pip
python2.7
python2.7-dev
#ruby
#ruby-dev
#ruby-bundler &&
&& rm -rf /var/lib/apt/lists/*

RUN apt-get update
RUN apt-get -y install software-properties-common
RUN apt-add-repository ppa:brightbox/ruby-ng #added
RUN apt-get update #added
RUN apt-get install ruby2.7 ruby2.7-dev -y #added
RUN ruby --version #test if ruby version is right

Install Gauntlt

RUN ruby -v #test if ruby version is right
RUN gem install rake
RUN gem install ffi -v 1.9.18
RUN gem install rake
RUN gem install gauntlt --no-document

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 &&
tar xzvf ${ARACHNI_VERSION}-linux-x86_64.tar.gz > /dev/null &&
mv ${ARACHNI_VERSION} /usr/local &&
ln -s /usr/local/${ARACHNI_VERSION}/bin/* /usr/local/bin/

Nikto

RUN apt-get update &&
apt-get install -y libtimedate-perl
libnet-ssleay-perl &&
rm -rf /var/lib/apt/lists/*

RUN git clone --depth=1 https://github.com/sullo/nikto.git &&
cd nikto/program &&
rm -rf /var/lib/apt/lists/*

RUN git clone --depth=1 https://github.com/sullo/nikto.git &&
cd nikto/program &&
echo "EXECDIR=/opt/nikto/program" >> nikto.conf &&
ln -s /opt/nikto/program/nikto.conf /etc/nikto.conf &&
chmod +x nikto.pl &&
ln -s /opt/nikto/program/nikto.pl /usr/local/bin/nikto

sqlmap

WORKDIR /opt
ENV SQLMAP_PATH /opt/sqlmap/sqlmap.py
RUN git clone --depth=1 https://github.com/sqlmapproject/sqlmap.git

dirb

COPY vendor/dirb222.tar.gz dirb222.tar.gz

RUN tar xvfz dirb222.tar.gz > /dev/null &&
cd dirb222 &&
chmod 755 ./configure &&
./configure &&
make &&
ln -s /opt/dirb222/dirb /usr/local/bin/dirb

ENV DIRB_WORDLISTS /opt/dirb222/wordlists

nmap

RUN apt-get update &&
apt-get install -y nmap &&
rm -rf /var/lib/apt/lists/*

sslyz

RUN python --version
RUN pip --version
RUN pip install sslyze==1.3.4
ENV SSLYZE_PATH /usr/local/bin/sslyze

ENTRYPOINT [ "/usr/local/bin/gauntlt" ]

Working correctly till step 28. But now showing error on step 29: RUN pip install sslyze==1.3.4.

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-MqvKce/cryptography/
You are using pip version 8.1.1, however version 21.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
The command '/bin/sh -c pip install sslyze==1.3.4' returned a non-zero code: 1

from gauntlt-docker.

i was able to resolve all of these issues. The code is on my other phone. Will update soon.

from gauntlt-docker.