prepare-machine.sh

# Install Docker
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable edge"
apt-get install -y docker-ce
sudo usermod -aG docker ubuntu

# Install Docker Compose
curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

# Prepare Environment Variables
export PUBLIC_IP=$(curl ipinfo.io/ip)
export DOCKER_HOST_IP=$(ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d/ -f1)

# needed for elasticsearch
sudo sysctl -w vm.max_map_count=262144
sudo echo "sudo sysctl -w vm.max_map_count=262144" > /etc/rc.local