Fabric (NVM-Docker)

The Hyperledger Fabric Composer environment requires a few prerequisites, that are listed hereunder:

• Docker Engine: Version 1.12.x
• Docker-Compose: Version 1.8.x
• Node: 6.x (note version 7 is not supported)
• npm: 4.0.x
• git: 2.9.x

Starting from a Debian 8(.7.1) template, we'll try to configure a suited environment following Fabric Composer's site recommendations.

Having experienced weird “permission denied” installation errors using the root user, we'll try to proceed to installation as sysadmin when possible.

https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-debian-8

> sudo apt-get install build-essential libssl-dev curl
> curl -sL https://raw.githubusercontent.com/creationix/nvm/v0.32.0/install.sh -o install_nvm.sh
> bash install_nvm.sh
> export NVM_DIR="/home/sysadmin/.nvm"
> [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"

> nvm ls-remote
...
         v6.9.3   (LTS: Boron)
         v6.9.4   (LTS: Boron)
         v6.9.5   (LTS: Boron)
         v6.10.0  (Latest LTS: Boron)
         v7.0.0  
...

Since Fabric Composer requires Node.js 6.x, and doesn't support 7, let's go for v6.10.0:

> nvm install 6.10.0
######################################################################## 100.0%
Computing checksum with sha256sum
Checksums matched!
Now using node v6.10.0 (npm v3.10.10)
Creating default alias: default -> 6.10.0 (-> v6.10.0)

We are supposed to use npm 4.0.x, 3.10.10 was installed, let's upgrade it as explained on the npmjs.com website:

> npm show npm@* version
...
npm@4.0.3 '4.0.3'
npm@4.0.5 '4.0.5'
npm@4.1.0 '4.1.0'
...
> npm install -g npm@4.0.5