Docker & Docker-Compose Install Script

init.docker.sh

curl -fsSL https://get.docker.com | sh
sudo curl -L "https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo usermod -aG docker $USER 
newgrp docker
newgrp $USER
# Sometimes, when Docker is installed by root, but launched by user in docker group, 
# Docker fails with a cryptic message about map segment error shared library libz.so.1
# This is due to Docker trying to access root's tmp folder without permission
# This teaches Docker where to look for tmp folder
echo "export TMPDIR=$HOME/tmp" >> ~/.bashrc
# Then verify Install with:
# $ docker run hello-world