Follow the official document to install docker on debian/jessie meets an error

Update the apt package index and install packages to allow apt to use repository over HTTPS: apt-get update apt-get install \ ca-certificates \ curl \ gnupg \ lsb-release Add Docker’s official GPG key: curl -fsSL | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg Use the following command to set up the stable repository echo \ "deb [arch=$(dpkg …

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