The Caddy license page states that: "If your company uses official Caddy binaries internally, in production, or distributes Caddy, a commercial license is requ

The Caddy license page states that: "If your company uses official Caddy binaries internally, in production, or distributes Caddy, a commercial license is required." So if you are not using the official binaries (for example a community-provided Caddy Docker image) a commercial license is not required.