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The Docker installation will also install Docker Compose, a tool for defining and running applications that require multiple containers, as the local Hyperledger blockchain network you will run in this tutorial does.Installation instructions for Mac, Windows, and Linux can be found here: Install Docker on Mac, Windows, and Linux To test your Docker installation, open a terminal window (or command prompt on Windows) and type the following commands: $ docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 78445dd45222: Pull complete Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7 Status: Downloaded newer image for hello-world:latest Hello from Docker!You've probably heard about blockchain, but maybe you're not sure how it applies to you as a Java™ developer. In a step-by-step approach, I'll show you how to use the Hyperledger Fabric v0.6 to build, run, and execute smart contracts, or written in the Java language.You'll install tools, define your local blockchain network, and finally, build and run a chaincode smart contract.However, this means you're getting into blockchain and chaincode at just the right time: on the ground floor. In order to run chaincode, you first need to set up your development environment.As this technology matures, your investment in learning it at this early stage will pay handsome dividends down the road. Once you've completed this section, you'll be ready to run one of the Hyperledger Java chaincode examples, where you'll deploy and invoke transactions on real chaincode.Gradle is a build automation system that combines simple syntax to specify build components, along with the best features of Apache Ant and Apache Maven to create a powerful build system that's easy to use.
Whereas Docker is a container environment, Vagrant uses .The rapid growth of the Hyperledger community and the Hyperledger Fabric means that blockchain technology is rapidly making its way to a software development project near you. Sometimes development technology can get in the way of solving the business problem.My main goal is in this tutorial is to show you how to write Java chaincode, so I've chosen the simplest development stack for that purpose.You could build the fabric from scratch if you wanted to (it's open source, after all), but at this stage, it's easier to use the pre-built Hyperledger Fabric images available in Docker Hub.As I mentioned in the introduction, another option (and one you may see in the Hyperledger docs) is to use Vagrant and Virtual Box.