Update the Dockefile

Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:jessie
+FROM python:3
 
 RUN export DEBIAN_FRONTEND=noninteractive \
  && apt-get update \
@@ -6,14 +6,19 @@ RUN export DEBIAN_FRONTEND=noninteractive \
       postfix dovecot-imapd dovecot-sqlite dovecot-lmtpd \
       dovecot-sieve dovecot-managesieved \
       dovecot-antispam spamassassin spamc clamav \
-      supervisor rsyslog \
+      supervisor rsyslog nginx \
  && apt-get clean
 
 # When installed non-interactively, the file does not get copied to the
 # postfix chroot, thus causing smtpd to fail.
 RUN cp /etc/services /var/spool/postfix/etc/
 
-ADD config /etc/
+# Install the Web admin panel
+COPY admin /admin
+RUN pip install -r /admin/requirements.txt 
+
+# Load the configuration
+COPY config /etc/
 
 # Explicitely specify the configuration file to avoid problems when
 # the default configuration path changes.