Add Vagrantfile for testing and figuring out install dependencies

.gitignore

@@ -1 +1,2 @@
 __pycache__
+.vagrant

Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "debian/buster64"
+
+  config.vm.synced_folder "./", "/vagrant", type: "rsync"
+
+  # Export postfix port 25 (guest) to port 2525 (host)
+  # This is useful for throwing swaks and other tools against postfix
+  config.vm.network "forwarded_port", guest: 7777, host: 7777
+
+  config.vm.provision "shell", inline: <<-SHELL
+    # Give that vagrant box an apparently good FQDN
+    echo "local-vagrant.example.com" > /etc/hostname
+    echo "local-vagrant.example.com" > /etc/mailname
+    echo "127.0.1.2 local-vagrant.example.com local-vagrant" > /etc/hosts
+    hostnamectl set-hostname local-vagrant.example.com
+
+    # Basic preparations
+    apt-get update
+
+    # Install postfix
+    DEBIAN_FRONTEND=noninteractive apt-get install -y postfix
+
+    # Add milter to configuration
+    postconf smtpd_milters=inet:127.0.0.1:7777
+    postconf non_smtpd_milters=inet:127.0.0.1:7777
+
+    # Enable and launch postfix
+    systemctl enable postfix.service
+    systemctl start postfix.service
+
+    # Install swaks
+    DEBIAN_FRONTEND=noninteractive apt-get install -y swaks
+
+
+    # Install required dependencies
+    DEBIAN_FRONTEND=noninteractive apt-get install -y python3-venv build-essential python3-dev python3-wheel libmilter-dev
+
+    # Create virtualenv for project
+    sudo -u vagrant python3 -m venv /tmp/venv
+    sudo -u vagrant /tmp/venv/bin/pip install -r /vagrant/requirements.txt
+
+    echo "Fireing it up ..."
+    sudo -u vagrant /tmp/venv/bin/python /vagrant/main.py
+
+  SHELL
+
+  config.trigger.after :up do |t|
+    t.info = "rsync"
+    t.run = {inline: "vagrant rsync"}
+    # If you want it running in the background switch these
+    #t.run = {inline: "bash -c 'vagrant rsync-auto bork &'"}
+  end
+
+end