Update install file to use a local version of pip

Dockerfile

@@ -34,6 +34,7 @@ RUN useradd user \
   && echo 'user:secret' | chpasswd
 
 USER user
+ENV PATH="/home/user/.local/bin:${PATH}"
 
 #=============================================================
 # Install requirements for OpenWPM

README.md

@@ -472,7 +472,7 @@ After a few minutes, the container is ready to use.
 
 You can run the demo measurement from inside the container, as follows:
 
-    mkdir -p docker-volume && docker run -v $PWD/docker-volume:/home/user/ \
+    mkdir -p docker-volume && docker run -v $PWD/docker-volume:/home/user/Desktop \
     -e DISPLAY=$DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix \
     -it openwpm python /opt/OpenWPM/demo.py
 

install.sh

@@ -39,7 +39,7 @@ if [ "$flash" = true ]; then
 fi
 sudo apt-get update
 
-sudo apt-get install -y firefox htop git python-dev libxml2-dev libxslt-dev libffi-dev libssl-dev build-essential xvfb libboost-python-dev libleveldb-dev libjpeg-dev curl wget python-pip
+sudo apt-get install -y firefox htop git python-dev libxml2-dev libxslt-dev libffi-dev libssl-dev build-essential xvfb libboost-python-dev libleveldb-dev libjpeg-dev curl wget
 
 # For some versions of ubuntu, the package libleveldb1v5 isn't available. Use libleveldb1 instead.
 sudo apt-get install -y libleveldb1v5 || sudo apt-get install -y libleveldb1
@@ -51,7 +51,10 @@ fi
 # Check if we're running on continuous integration
 # Python requirements are already installed by .travis.yml on Travis
 if [ "$TRAVIS" != "true" ]; then
-	pip install --user -U -r requirements.txt
+  wget https://bootstrap.pypa.io/get-pip.py
+  python get-pip.py --user
+  rm get-pip.py
+	pip install --user --upgrade -r requirements.txt
 fi
 
 # Grab the latest version of Firefox ESR.