anchor.diff:  
   RUN curl --silent --show-error --fail --location \
           --header "Accept: application/tar+gzip, application/x-gzip, application/octet-stream" -o - \
  -        "https://caddyserver.com/download/build?os=linux&arch=amd64&features=cloudflare%2Cdigitalocean%2Cdnsimple%2Cdyn%2Cgooglecloud%2Clinode%2Croute53" \
  +        "https://caddyserver.com/download/linux/amd64?plugins=http.cgi,http.filemanager,http.git,tls.dns.cloudflare,tls.dns.digitalocean,tls.dns.dnsimple,tls.dns.dyn,tls.dns.googlecloud,tls.dns.linode,tls.dns.route53" \
           | tar --no-same-owner -C /usr/bin/ -xz caddy \
       && mv /usr/bin/caddy /usr/bin/caddy \
       && chmod 0755 /usr/bin/caddy
  
positive.code: 
  WORKDIR /var/www/public
  
  CMD ["/usr/bin/caddy", "-conf", "/etc/Caddyfile"]
negative.code: 
  MAINTAINER Eric Pfeiffer <computerfr33k@users.noreply.github.com>
  
  ENV caddy_version=0.10.0
  
  LABEL caddy_version="$caddy_version" architecture="amd64"
  
  