Support docker

Dockerfile

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+FROM ubuntu:16.04
+
+RUN apt update
+RUN apt install -y --allow-unauthenticated --no-install-recommends \
+        build-essential apt-utils cmake git curl vim ca-certificates \
+        libjpeg-dev libpng-dev python3.5 python3-pip python3-setuptools \
+        libgtk3.0 libsm6 python3-dev
+RUN rm -rf /var/lib/apt/lists/*
+
+WORKDIR /workspace/
+COPY deep_rl deep_rl
+COPY setup.py setup.py
+COPY examples.py examples.py
+RUN pip3 install --upgrade pip
+RUN ln -s /usr/bin/python3 /usr/bin/python
+RUN ln -s /usr/bin/pip3 /usr/bin/pip
+RUN pip install -e .
+RUN pip install pybullet