Create a docker container image and runing it with docker-compose (#164)

* make the dockerfile working and docker-compose
* add Readme
* update docker-compose.yml
* fix interaction with the mangosd server

dockercontainer/DockerFile-mangosd

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+#Build image
+FROM ubuntu:18.04 as build-step
+
+RUN apt-get -y update
+RUN apt-get -y install curl autoconf automake cmake libbz2-dev libace-dev libssl-dev libmysqlclient-dev libtool build-essential
+
+COPY . /mangoserver
+RUN mkdir /mangoserver/build
+WORKDIR /mangoserver/build
+
+#Install mangos
+RUN cmake .. -DCMAKE_INSTALL_PREFIX=/mangos -DBUILD_MANGOSD=1 -DBUILD_REALMD=0 -DBUILD_TOOLS=0
+RUN make -j4
+RUN make install
+
+#Runtime image
+FROM ubuntu:18.04 as runtime
+
+RUN apt-get -y update && apt-get -y upgrade
+RUN apt-get -y install libmysqlclient20 openssl
+
+COPY --from=build-step /mangos /mangos
+WORKDIR /mangos/bin
+RUN cp ../etc/mangosd.conf.dist ../etc/mangosd.conf
+RUN chmod +x mangosd
+
+EXPOSE 8085
+ENTRYPOINT [ "./mangosd" ]

dockercontainer/DockerFile-realmd

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+#Build image
+FROM ubuntu:18.04 as build-step
+
+RUN apt-get -y update
+RUN apt-get -y install curl autoconf automake cmake libbz2-dev libace-dev libssl-dev libmysqlclient-dev libtool build-essential
+
+COPY . /mangoserver
+RUN mkdir /mangoserver/build
+WORKDIR /mangoserver/build
+
+#Install mangos
+RUN cmake .. -DCMAKE_INSTALL_PREFIX=/mangos -DBUILD_MANGOSD=0 -DBUILD_REALMD=1 -DBUILD_TOOLS=0
+RUN make -j4
+RUN make install
+
+#Runtime image
+FROM ubuntu:18.04 as runtime
+
+RUN apt-get -y update && apt-get -y upgrade
+RUN apt-get -y install libmysqlclient20 openssl
+
+COPY --from=build-step /mangos /mangos
+WORKDIR /mangos/bin
+RUN cp ../etc/realmd.conf.dist ../etc/realmd.conf
+RUN chmod +x realmd
+
+EXPOSE 3724
+ENTRYPOINT [ "./realmd" ]

dockercontainer/Readme.txt

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+How to start:
+To start the docker container use the command "docker-compose up" inside the dockercontainer folder
+If you need to rebuild the images use "docker-compose build"
+
+Now to setup the server make sure you have the correct configuration and the data folder in the correct location:
+The configuration should be place here "../../etc" from the dockercontainer folder
+The data folder should be place here "../../data" from the dockercontainer folder
+Note: those paths can be change inside the docker-compose.yml file
+
+Configutation:
+Inside your "mangosd.conf" make sure the "DataDir" is set to "/mangos/data"
+Make sure all the mysql hostname is set to "mysqldb"
+The Mysql connection seting is set inside the docker-compose.yml file and can be change
+Here the default values:
+- MYSQL_USER=mangos
+- MYSQL_PASSWORD=mangos
+- MYSQL_ROOT_PASSWORD=mangos
+- MYSQL_ROOT_HOST=%
+
+The database need to be run manualy in order to have it initialize

dockercontainer/docker-compose.yml

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+#To start the server from this docker-compose file you can run the command "docker-compose up"
+#Configure the location of the configuration file and the data folder
+#The connection to mysql should match the name of the service in this case "mysqldb"
+version: "2.4"
+services:
+  mangosd:
+    build:
+      context: ..
+      dockerfile: dockercontainer/Dockerfile-mangosd
+    depends_on:
+      - mysqldb
+    restart: always
+    ports:
+      - "8085:8085"
+    stdin_open: true
+    tty: true
+    volumes:
+#      - ./local/path/to/etc:/mangos/etc
+#      - ./local/path/to/data:/mangos/data
+      - ../../etc:/mangos/etc
+      - ../../data:/mangos/data
+
+  realmd:
+    build:
+      context: ..
+      dockerfile: dockercontainer/Dockerfile-realmd
+    depends_on:
+      - mysqldb
+    restart: always
+    ports:
+      - "3724:3724"
+    volumes:
+#      - ./local/path/to/etc:/mangos/etc
+      - ../../etc:/mangos/etc
+
+  mysqldb:
+    image: mysql:5.6
+    restart: always
+    environment:
+      - MYSQL_USER=mangos
+      - MYSQL_PASSWORD=mangos
+      - MYSQL_ROOT_PASSWORD=mangos
+      - MYSQL_ROOT_HOST=%
+    ports:
+      - "3306:3306"
+    volumes:
+#      - ./local/path/to/mysqldatabase:/var/lib/mysql
+      - ../../dbdata:/var/lib/mysql