Quick Docker Installation Script for new DigitalOcean Droplets on Ubuntu LTS

install-docker.sh

#!/usr/bin/env bash

# Set Variables for Docker
DOCKER_GPG_URL="https://download.docker.com/linux/ubuntu/gpg"
DOCKER_COMPOSE_VERSION="v2.1.0"

# Remove older versions
sudo apt-get remove -y docker docker-engine docker.io containerd runc

# Update the catalog and install basic dependencies of docker
sudo apt-get update \
 && sudo apt-get install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

# Add Docker's GPG key
curl -fsSL "${DOCKER_GPG_URL}" | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88

# Add Docker's Repository
sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

# Update the Catalogue and install Docker
sudo apt-get update \
 && sudo apt-get install -y docker-ce docker-ce-cli containerd.io

# Install Docker Compose
DOCKER_COMPOSE_RELEASE_BASE_URL="https://github.com/docker/compose/releases/download"
DOCKER_COMPOSE_DISTRO_FILE="docker-compose-$(uname -s)-$(uname -m)"
DOCKER_COMPOSE_URL="${DOCKER_COMPOSE_RELEASE_BASE_URL}/${DOCKER_COMPOSE_VERSION}/${DOCKER_COMPOSE_DISTRO_FILE}"
sudo curl -L "${DOCKER_COMPOSE_URL}" -o /usr/local/bin/docker-compose \
 && sudo chmod +x /usr/local/bin/docker-compose