removed dependency on Eigen3 since we provide Eigen 3.3.7 and Ubuntu Bionic provides Eigen 3.3.4.

docker/ubuntu-boost-tbb/Dockerfile

@@ -2,7 +2,7 @@
 FROM ubuntu:bionic
 
 # Update apps on the base image
-RUN apt-get -y update && apt-get install -y
+RUN apt-get -y update && apt install -y
 
 # Install C++
 RUN apt-get -y install build-essential 
@@ -12,7 +12,3 @@ RUN apt-get -y install libboost-all-dev cmake
 
 # Install TBB
 RUN apt-get -y install libtbb-dev
-
-# Install latest Eigen
-RUN apt-get install -y libeigen3-dev
-