ported double tracking from TC

docker/authserver/Dockerfile

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+FROM ubuntu:20.04
+
+# install the required dependencies to run the authserver
+RUN apt update && apt install -y libmysqlclient-dev libssl-dev libace-6.4.5 libace-dev net-tools;
+
+HEALTHCHECK --interval=5s --timeout=15s --start-period=30s --retries=3 CMD netstat -lnpt | grep :3724 || exit 1
+
+# run the authserver located in the directory "docker/authserver/bin" of the host machine
+CMD ["/azeroth-server/bin/authserver"]

docker/authserver/README.md

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+# AzerothCore Dockerized Authserver
+
+This provides a way to manually build and launch a container with the AzerothCore authserver running inside it.
+
+If you just want to install the whole AzerothCore quickly using Docker Compose, we recommend [this guide](http://www.azerothcore.org/wiki/install-with-Docker).
+
+## Requirements
+
+- You need to have [Docker](https://docs.docker.com/install/) installed in your system. You can install it on any operating system.
+
+- You need to first build the [AzerothCore Build Image](https://github.com/azerothcore/azerothcore-wotlk/tree/master/docker/build).
+
+- If you haven't created a docker network yet, create it by simply using `docker network create ac-network`.
+
+- You have to copy the file `docker/authserver/etc/authserver.conf.dockerdist` and rename the copied file to `docker/authserver/etc/authserver.conf`. Then open it and change the values where needed (you may need to change the DB port).
+
+## Building the container image
+
+To build the container image you have to be in the **main** folder of your local AzerothCore sources directory.
+
+```
+docker build -t azerothcore/authserver -f docker/authserver/Dockerfile docker/authserver
+```
+
+*For more information about the `docker build` command, check the [docker build doc](https://docs.docker.com/engine/reference/commandline/build/).*
+
+## Run the container
+
+```
+docker run --name ac-authserver \
+    --mount type=bind,source="$(pwd)"/docker/authserver/bin/,target=/azeroth-server/bin \
+    --mount type=bind,source="$(pwd)"/docker/authserver/etc/,target=/azeroth-server/etc \
+    --mount type=bind,source="$(pwd)"/docker/authserver/logs/,target=/azeroth-server/logs \
+    -p 127.0.0.1:3724:3724 \
+    --network ac-network \
+    -it azerothcore/authserver
+```
+
+*For more information about the `docker run` command, check the [docker run doc](https://docs.docker.com/engine/reference/run/).*

docker/authserver/etc/authserver.conf.dockerdist

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+###############################################
+# AzerothCore Auth Server configuration file #
+###############################################
+[authserver]
+
+# Do not change this
+LogsDir = "/azeroth-server/logs" # will reflect on your host directory: docker/worldserver/logs
+
+# Change this configuration accordingly with your docker setup
+# The format is "hostname;port;username;password;database":
+# - docker containers must be on the same docker network to be able to communicate
+# - the DB hostname will be the name of the database docker container
+LoginDatabaseInfo = "ac-database;3306;root;password;acore_auth"
+
+# Add more configuration overwrites by copying settings from from authserver.conf.dist
+LogLevel = 3
+SQLDriverLogFile = "SQLDriver.log"
+SQLDriverQueryLogging = 1
+