## 1. **Docker Installation** ``` curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" sudo apt update sudo apt install docker* echo "or" sudo apt install -y docker-ce sudo systemctl status docker sudo usermod -aG docker username #οπου username το όνομα του χρήστη που θα δουλεύει με docker ``` **1.1 docker compose** ``` sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose sudo chmod +x /usr/local/bin/docker-compose sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose ``` **1.2 certificate** ``` $ sudo su # touch set-ca.sh ``` - **copy-paste lines into set-ca .sh file** ``` registry_address=registry.vlabs.uniwa.gr registry_port=5043 mkdir -p /etc/docker/certs.d/$registry_address:$registry_port openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt registry_port=5080 mkdir -p /etc/docker/certs.d/$registry_address:$registry_port openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt registry_address=hub.swarmlab.io registry_port=5443 mkdir -p /etc/docker/certs.d/$registry_address:$registry_port openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt registry_port=5480 mkdir -p /etc/docker/certs.d/$registry_address:$registry_port openssl s_client -showcerts -connect $registry_address:$registry_port < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /etc/docker/certs.d/$registry_address:$registry_port/ca.crt ``` [![asciicast](https://asciinema.org/a/373216.svg)](https://asciinema.org/a/373216)