[DOCKER][MAIL] Added docker mailserver setup

dockermail/README

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+To start, run setup.sh choose name and domain and create the first email account. Then open mailserver/ and run 'docker-compose up'
+To change settings read mailserver/env-mailserver
+
+To update, run update.sh
+
+Add more accounts with add_account.sh and send mails with send_mail.sh

dockermail/add_account.sh

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+#!/bin/bash
+
+read -p "EMAIL:         " user
+read -s -p "PASS:         " password
+printf "\n"
+
+bash mailserver/setup.sh email add "$user" "$password"
+

dockermail/send_mail.sh

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+#!/bin/bash
+
+if ! command -v swaks &> /dev/null
+then
+  echo "SWAKS not found."
+  exit
+fi
+
+read -p "TO:         " to_input
+read -p "FROM:       " from_input
+read -s -p "PASS:       " pass_input
+printf "\n"
+read -p "SERVER:     " host_input
+read -p "HEADER:     " header_input
+read -p "BODY:       " body_input
+
+swaks -t "$to_input" -f "$from_input" -s "$host_input" -au "$from_input" -ap "$pass_input" --header "$header_input" --body "$body_input" -tlso

dockermail/setup.sh

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+#!/bin/bash
+
+mkdir ./mailserver
+pushd ./mailserver || exit
+curl -o setup.sh https://raw.githubusercontent.com/tomav/docker-mailserver/master/setup.sh && chmod a+x ./setup.sh
+curl -o docker-compose.yml https://raw.githubusercontent.com/tomav/docker-mailserver/master/docker-compose.yml.dist
+curl -o env-mailserver https://raw.githubusercontent.com/tomav/docker-mailserver/master/env-mailserver.dist
+
+if [ -f .env ]; then
+	rm ./.env
+fi
+
+echo "CONTAINER_NAME=mail" >> .env
+read -r -p "HOSTNAME: "
+echo "HOSTNAME=$REPLY" >> .env
+read -r -p "DOMAIN: "
+echo "DOMAINNAME=$REPLY" >> .env
+
+printf "\nSetup the first account.\n"
+read -r -p "Enter Email: " user
+
+bash ./setup.sh email add "$user"
+bash ./setup.sh config dkim

dockermail/update.sh

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+#|/bin/bash
+
+pushd ./mailserver || exit
+docker-compose down
+docker pull tvial/docker-mailserver:latest
+docker-compose up -d mail