fix install (#580)

docs/install.md

@@ -45,7 +45,7 @@ source tools/venv/bin/activate
 
 ## Running in Docker Container
 
-Docker is an open source tool to build, ship, and run distributed applications in an isolated environment. A Docker image for this project has been provided in [hub.docker.com](https://hub.docker.com) with all the dependencies installed, including the pre-built PaddlePaddle, CTC decoders, and other necessary Python and third-party packages. This Docker image requires the support of NVIDIA GPU, so please make sure its availiability and the [nvidia-docker](https://github.com/NVIDIA/nvidia-docker) has been installed.
+Docker is an open source tool to build, ship, and run distributed applications in an isolated environment. A Docker image for this project has been provided in [hub.docker.com](https://hub.docker.com) with all the dependencies installed. This Docker image requires the support of NVIDIA GPU, so please make sure its availiability and the [nvidia-docker](https://github.com/NVIDIA/nvidia-docker) has been installed.
 
 Take several steps to launch the Docker image:
 
@@ -79,3 +79,7 @@ For example, for CUDA 10.1, CuDNN7.5 install paddle 2.0.0:
 ```bash
 python3 -m pip install paddlepaddle-gpu==2.0.0
 ```
+
+- Install Deepspeech
+
+Please see [Setup](#setup)  section.