Ubuntu pre reqs (hyperledger-archives#1598)

* added script, changed docs

Signed-off-by: Dave Kelsey <[email protected]>

* improve the python check

Signed-off-by: Dave Kelsey <[email protected]>

packages/composer-website/jekylldocs/installing/development-tools.md

@@ -31,7 +31,7 @@ A code editor of your choice, we recommend VSCode.
 If you're running on Ubuntu, you can download the prerequisites using the following commands:
 
 ```bash
-curl -O https://raw.githubusercontent.com/hyperledger/composer-sample-applications/master/packages/getting-started/scripts/prereqs-ubuntu.sh
+curl -O https://hyperledger.github.io/composer/prereqs-ubuntu.sh
 
 chmod u+x prereqs-ubuntu.sh
 ```

packages/composer-website/jekylldocs/prereqs-ubuntu.sh

@@ -0,0 +1,127 @@
+#!/bin/bash
+
+# Usage:
+#
+# ./prereqs-ubuntu.sh
+#
+# User must then logout and login upon completion of script
+#
+
+# Exit on any failure
+set -e
+
+# Array of supported versions
+declare -a versions=('trusty' 'xenial' 'yakkety');
+
+# check the version and extract codename of ubuntu if release codename not provided by user
+if [ -z "$1" ]; then
+    source /etc/lsb-release || \
+        (echo "Error: Release information not found, run script passing Ubuntu version codename as a parameter"; exit 1)
+    CODENAME=${DISTRIB_CODENAME}
+else
+    CODENAME=${1}
+fi
+
+# check version is supported
+if echo ${versions[@]} | grep -q -w ${CODENAME}; then
+    echo "Installing Hyperledger Composer prereqs for Ubuntu ${CODENAME}"
+else
+    echo "Error: Ubuntu ${CODENAME} is not supported"
+    exit 1
+fi
+
+# Update package lists
+echo "# Updating package lists"
+sudo apt-get update
+
+# Install Git
+echo "# Installing GitHub"
+sudo apt-get -y install git
+
+# Install nvm dependencies
+echo "# Installing nvm dependencies"
+sudo apt-get -y install build-essential libssl-dev
+
+# Execute nvm installation script
+echo "# Executing nvm installation script"
+curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.2/install.sh | bash
+
+# Set up nvm environment without restarting the shell
+export NVM_DIR="${HOME}/.nvm"
+[ -s "${NVM_DIR}/nvm.sh" ] && . "${NVM_DIR}/nvm.sh"
+[ -s "${NVM_DIR}/bash_completion" ] && . "${NVM_DIR}/bash_completion"
+
+# Install node
+echo "# Installing nodeJS"
+nvm install --lts
+
+# Configure nvm to use version 6.9.5
+nvm use --lts
+nvm alias default 'lts/*'
+
+# Install the latest version of npm
+echo "# Installing npm"
+npm install npm@latest -g
+
+# Ensure that CA certificates are installed
+sudo apt-get -y install apt-transport-https ca-certificates
+
+# Add Docker repository key to APT keychain
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+
+# Update where APT will search for Docker Packages
+echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu ${CODENAME} stable" | \
+    sudo tee /etc/apt/sources.list.d/docker.list
+
+# Update package lists
+sudo apt-get update
+
+# Verifies APT is pulling from the correct Repository
+sudo apt-cache policy docker-ce
+
+# Install kernel packages which allows us to use aufs storage driver if V14 (trusty/utopic)
+if [ "${CODENAME}" == "trusty" ]; then
+    echo "# Installing required kernel packages"
+    sudo apt-get -y install linux-image-extra-$(uname -r) linux-image-extra-virtual
+fi
+
+# Install Docker
+echo "# Installing Docker"
+sudo apt-get -y install docker-ce
+
+# Add user account to the docker group
+sudo usermod -aG docker $(whoami)
+
+# Install docker compose
+echo "# Installing Docker-Compose"
+sudo curl -L "https://github.com/docker/compose/releases/download/1.13.0/docker-compose-$(uname -s)-$(uname -m)" \
+    -o /usr/local/bin/docker-compose
+sudo chmod +x /usr/local/bin/docker-compose
+
+# Install python v2 if required
+set +e
+COUNT="$(python -V 2>&1 | grep -c 2.)"
+if [ ${COUNT} -ne 1 ]
+then
+   sudo apt-get install -y python-minimal
+fi
+
+
+# Print installation details for user
+echo ''
+echo 'Installation completed, versions installed are:'
+echo ''
+echo -n 'Node:           '
+node --version
+echo -n 'npm:            '
+npm --version
+echo -n 'Docker:         '
+docker --version
+echo -n 'Docker Compose: '
+docker-compose --version
+echo -n 'Python:         '
+python -V
+
+# Print reminder of need to logout in order for these changes to take effect!
+echo ''
+echo "Please logout then login before continuing."