Docker build for ARM ARM64

At the moment you can build parity with Docker. Follow the instructions below.

1. Install Docker

2. Clone this repository:

   git clone https://github.com/ethcore/parity-snappy.git
   

3. Navigate to the directory:

   cd parity-snappy
   

4. Build:

   #git checkout aarch64
   # ^^^ remove '#' if you want to build for 64-bit architecture.
   docker build -t ethcore:parity-arm .
   docker run -d --name parity-arm ethcore:parity-arm
   docker start parity-arm
   docker ps
   docker cp parity-arm:/build/parity/target/arm-unknown-linux-gnueabihf/release/parity parity-arm
   # ^^^ Replace `arm-unknown-linux-gnueabihf` with `aarch64-unknown-linux-gnu` for 64-bit architecture.
   docker stop parity-arm
   docker rm parity-arm
   

5. Copy parity-arm file to your device.