Docker refine

.dockerignore

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+**/*.pyc
+**/__pycache__
+.gitignore
+.git
+docker
+.dockerignore

docker/Dockerfile

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+FROM nvidia/cuda:10.0-cudnn7-devel-ubuntu16.04
+ARG PYTHON_VERSION=3.6
+RUN apt-get update && apt-get install -y --no-install-recommends \
+         build-essential \
+         curl \
+         ca-certificates \
+     && rm -rf /var/lib/apt/lists/*
+
+RUN curl -o ~/miniconda.sh -O  https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh  && \
+     chmod +x ~/miniconda.sh && \
+     ~/miniconda.sh -b -p /opt/conda && \
+     rm ~/miniconda.sh && \
+     /opt/conda/bin/conda install -y python=$PYTHON_VERSION  && \
+     /opt/conda/bin/conda clean -ya
+ENV PATH /opt/conda/bin:$PATH
+
+WORKDIR /opt/texar
+COPY . .
+RUN pip install -e . && pip install -r requirements.txt
+ENV LD_LIBRARY_PATH /usr/local/cuda-10.0/compat:$LD_LIBRARY_PATH
+
+WORKDIR /workspace
+RUN chmod -R a+w /workspace

docker/README.md

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+# Docker images for Texar
+
+## Build the docker image
+
+If you don't have Docker, please [install docker](https://docs.docker.com/engine/installation/) first.
+
+This Dockerfile is supplied to build docker image with Ubuntu 16.04, cuda 10.0 and cudnn v7. The image uses Miniconda to configure python environment.
+
+### Build image with default Python3.6
+
+By default, the Miniconda of image uses Python3.6.
+
+The image need to be built from `texar` repo directory, because docker needs to copy `texar` repo into its filesystem to install Texar into the image. So under current directory, run the following cmds to build image with Python3.6:
+
+```bash
+cd .. 
+docker build -f docker/Dockerfile -t texar .
+```
+
+### Build image with other Python versions
+
+You can pass `--build-arg PYTHON_VERSION=x.y` flag in the building cmd to specify the Python version for Miniconda. E.g. under current directory, run following cmds to build image with Python2.7:
+
+```bash
+cd ..
+docker build --build-arg PYTHON_VERSION=2.7 -f docker/Dockerfile  -t texar  . 
+```
+
+Otherwise leave it unset to use the default python3.6
+
+## Check Texar installation
+
+To check if Texar is installed correctly, firstly run container shell from the image, use following cmd:
+
+```bash
+docker run -it texar /bin/bash
+```
+
+Then import Texar in python, we can run the following cmd into container shell:
+
+```bash
+python -c "import texar as tx;print(tx.data)"
+```
+
+If Texar is installed correctly, the shell should return:
+
+```bash
+<module 'texar.data' from '/opt/texar/texar/data/__init__.py'>
+```
+
+To exit the container shell, press `Ctrl` + `d`.