Update Dockerfile to match the latest installation instructions

Analyser/scripts/postinstall

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 (cd node_modules/jalangi2/ && npm install)
-(git clone git@github.com:ExpoSEJS/z3javascript.git node_modules/z3javascript && cd node_modules/z3javascript && npm install)
+(git clone https://github.com/ExpoSEJS/z3javascript.git node_modules/z3javascript && cd node_modules/z3javascript && npm install)
 

Dockerfile

@@ -1,8 +1,14 @@
 FROM debian:latest
 
 #Install SSH, Xvfb etc
-RUN apt update && apt install --assume-yes git bash openssh-server clang build-essential vim curl xvfb python3 python3-pip libgtk-3-0 tmux libxss1 libgconf-2-4 libnss3 libasound2
-RUN pip3 install mitmproxy==4.0.4
+RUN apt update && apt install --assume-yes git bash openssh-server clang build-essential vim curl xvfb python3 python3-pip python3-venv libgtk-3-0 tmux libxss1 libgconf-2-4 libnss3 libasound2 unzip
+
+# Setup VENV https://pythonspeed.com/articles/activate-virtualenv-dockerfile/
+ENV VIRTUAL_ENV=/opt/venv
+RUN python3 -m venv $VIRTUAL_ENV
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+
+RUN pip3 install mitmproxy
 RUN useradd --create-home --shell /bin/bash expose
 RUN echo 'expose:expose' | chpasswd
 RUN mkdir -p /run/sshd
@@ -14,10 +20,17 @@ RUN ssh-keygen -A
 
 #Install ExpoSE into /source/
 ADD . /source
+USER root
 RUN chown -R expose /source; chmod -R 777 /source/
 USER expose
 WORKDIR /source
-RUN ./scripts/docker_setup
+ENV NODE_VERSION=14.16.1
+RUN curl -fsSL https://fnm.vercel.app/install | bash
+ENV PATH="/home/expose/.local/share/fnm:$PATH"
+RUN echo "$PATH"
+RUN eval $(fnm env) && fnm install $NODE_VERSION && fnm alias default $NODE_VERSION && fnm use default
+ENV PATH="/home/expose/.local/share/fnm/aliases/default/bin:$PATH"
+RUN ./install
 RUN nohup Xvfb :1 -screen 0 800x600x24 &
 ENV DISPLAY 1
 USER root