anchor.diff:  RUN curl -s https://letsencrypt.org/certs/lets-encrypt-x1-cross-signed.pem > /etc/ssl/certs/lets-encrypt-x1-cross-signed.pem && \
     curl -s https://letsencrypt.org/certs/lets-encrypt-x2-cross-signed.pem > /etc/ssl/certs/lets-encrypt-x2-cross-signed.pem
   
  -ADD ./target/bin /usr/local/bin
  +COPY ./target/bin /usr/local/bin
   # Start-mailserver script
  -ADD ./target/start-mailserver.sh /usr/local/bin/
  +COPY ./target/start-mailserver.sh /usr/local/bin/
   RUN chmod +x /usr/local/bin/*
   
   EXPOSE 25 587 143 993 110 995 4190
  
positive.code: 
  # Configure DKIM (opendkim)
  # DKIM config files
  ADD target/opendkim/opendkim.conf /etc/opendkim.conf
  ADD target/opendkim/default-opendkim /etc/default/opendkim
  
  # Configure DMARC (opendmarc)
  ADD target/opendmarc/opendmarc.conf /etc/opendmarc.conf
  ADD target/opendmarc/default-opendmarc /etc/default/opendmarc
  
  # Configure fetchmail
  ADD target/fetchmail/fetchmailrc /etc/fetchmailrc_general
  RUN sed -i 's/START_DAEMON=no/START_DAEMON=yes/g' /etc/default/fetchmail
  
  # Configures Postfix
  ADD target/postfix/main.cf target/postfix/master.cf /etc/postfix/
  
  # Configuring Logs
  RUN sed -i -r "/^#?compress/c\compress\ncopytruncate" /etc/logrotate.conf && \
  
negative.code: RUN useradd -u 5000 -d /home/docker -s /bin/bash -p $(echo docker | openssl passwd -1 -stdin) docker
  
  # Configure Fail2ban
  COPY target/fail2ban/jail.conf /etc/fail2ban/jail.conf
  COPY target/fail2ban/filter.d/dovecot.conf /etc/fail2ban/filter.d/dovecot.conf
  RUN echo "ignoreregex =" >> /etc/fail2ban/filter.d/postfix-sasl.conf
  
  # Enables Clamav
  