How to install older Docker version (18.06.2) on Ubuntu 18?
sudo -icurl -fsSL https://apt.dockerproject.org/gpg | apt-key add -apt-add-repository "deb https://apt.dockerproject.org/repo ubuntu-$(lsb_release -cs) main"apt-get update -y && apt-get install docker-ce=18.06.2~ce~3-0~ubuntuOR
sudo -icurl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"apt-get update -y && apt install -y docker-ce=18.06.3~ce~3-0~ubuntu docker-ce-cli=18.06.3~ce~3-0~ubuntu containerd.io