anchor.diff:  
           entrypoint = mkOption {
             type = with types; nullOr str;
  -          description = "Override the default entrypoint of the image.";
  +          description = lib.mdDoc "Override the default entrypoint of the image.";
             default = null;
             example = "/bin/my-app";
           };
  
positive.code:         user = mkOption {
            type = with types; nullOr str;
            default = null;
            description = ''
              Override the username or UID (and optionally groupname or GID) used
              in the container.
            '';
  
negative.code:         environment = mkOption {
            type = with types; attrsOf str;
            default = {};
            description = lib.mdDoc "Environment variables to set for this container.";
            example = literalExpression ''
              {
                DATABASE_HOST = "db.example.com";
  