Caddy releases now include deb packages, and Debian will likely soon start packaging Caddy.
This project builds a Caddy deb package for Debian and Ubuntu. The package installs Caddy to /opt/caddy/. It sets up Caddy to look for configuration (Caddyfiles) in /etc/opt/caddy/Caddyfile.d/*.conf and to store variable data like Let's Encrypt certificates in /var/opt/caddy/.
The package assumes you are going to configure Caddy though Caddyfiles, not the API. This is why it does not start Caddy with --resume.
The installation paths are in accordance with the Filesystem Hierarchy Standard. I like it because it prevents conflicts with offical packages and with software installed from source in /usr/local/.
You can build the package and install it on your server from a Debian/Ubuntu machine with SSH access to the server. You will likely need a working knowledge of Debian or Ubuntu to succeed. Follow the steps.
1. Clone this repository on your developer/sysadmin machine.
2. Download Caddy 2.x for the server's CPU architecture. Copy the binary to debian/opt/caddy/bin/caddy.
3. Run the following shell command. Replace the values of SSH_SERVER and SSH_PORT with appropriate for the server you are deploying to.
sudo make deb && make deploy SSH_SERVER=example.com SSH_PORT=2020 && make cleanMIT.