Feat(Docker/bash): docker-compose system rework (#4488)

## ⚠️ATTENTION! ⚠️ Upgrading procedure:

**Database:** After this PR will be merged you need to backup your DB first (you can use the db-assembler or any mysql client to generate the dump) and restore it after.  The reason is that we use now docker named volumes instead of binded ones to improve performance.

**Conf & client data**: if you use the default configuration, both the etc and the data folder are now available inside the **/env/docker**. 

Finally, you can cleanup the /docker folder previously used by our system.

## Changes Proposed:

This PR will implement the [devcontainer ](https://code.visualstudio.com/docs/remote/containers) feature for VSCode. Allowing us to develop and debug directly within the container in the same way on all OSes.

* Implemented support for vscode dev-container feature by remote-extension suite
* Docker performance optimizations for MacOS and non-linux hosts
* Bash system improvements
* Implemented first command using Deno runtime environment (typescript) and [commander.js]
* Implemented wait mechanism for db_assembler
* Implemented db migration command
* possibility to run the authserver and worldserver with GDB using the integrated simple-restarter
* Implemented docker multi-stage mechanism to use one single Dockerfile for all the services
* client-data downloader now creates a placeholder to avoid downloading the same version of data files multiple times
* deployment of pre-compiled docker images on [docker hub](https://hub.docker.com/u/acore), you can test them [here](https://github.com/azerothcore/acore-docker)

4 files changed, 95 insertions, 20 deletions

diff --git a/conf/dist/config.sh b/conf/dist/config.sh
index 8feef71197..c9ef22abc7 100644
--- a/conf/dist/config.sh
+++ b/conf/dist/config.sh
@@ -5,7 +5,9 @@ SRCPATH="$AC_PATH_ROOT"
 # absolute path where build files must be stored
 BUILDPATH="$AC_PATH_ROOT/var/build/obj"
 
-# absolute path where binary files must be stored
+# absolute path where azerothcore will be installed
+# NOTE: on linux the binaries are stored in a subfolder (/bin)
+# of the $BINPATH
 BINPATH="$AC_PATH_ROOT/env/dist"
 
 # bash fills it by default with your os type. No need to change it.
@@ -15,12 +17,17 @@ BINPATH="$AC_PATH_ROOT/env/dist"
 # When using linux, our installer automatically get information about your distro
 # using lsb_release. If your distro is not supported but it's based on ubuntu or debian,
 # please change it to one of these values.
-#OSDISTRO="ubuntu"
+# OSDISTRO="ubuntu"
 
 # absolute path where config. files must be stored
 # default: the system will use binpath by default
 # CONFDIR="$AC_PATH_ROOT/env/dist/etc/"
 
+# absolute path where maps and client data will be downloaded
+# by the AC dashboard
+# default: the system will use binpath by default
+# DATAPATH="$BINPATH/bin"
+
 ##############################################
 #
 #  COMPILER_CONFIGURATIONS
@@ -43,10 +50,16 @@ MTHREADS=0
 CWARNINGS=ON
 # enable/disable some debug informations ( it's not a debug compilation )
 CDEBUG=OFF
-# specify compilation type
-CTYPE=Release
+# specify compilation type:
+# * Release: high optimization level, no debug info, code or asserts.
+# * Debug: No optimization, asserts enabled, [custom debug (output) code enabled],
+#    debug info included in executable (so you can step through the code with a
+#    debugger and have address to source-file:line-number translation).
+# * RelWithDebInfo: optimized, *with* debug info, but no debug (output) code or asserts.
+# * MinSizeRel: same as Release but optimizing for size rather than speed.
+CTYPE=${CTYPE:-Release}
 # compile scripts
-CSCRIPTS=ON
+CSCRIPTS=${CSCRIPTS:-ON}
 # compile unit tests
 CBUILD_TESTING=OFF
 # compile server
@@ -76,17 +89,21 @@ CCUSTOMOPTIONS=""
 ##############################################
 
 #
-# Basically you don't have to edit it
-# but if you have another database you can add it here
-# and create relative confiugurations below
+# Comma separated list of databases
 #
-DATABASES=(
-	"AUTH"
-	"CHARACTERS"
-	"WORLD"
-)
+# You can add another element here if you need
+# to support multiple databases
+#
+
+DBLIST=${DBLIST:-"AUTH,CHARACTERS,WORLD"}
+# convert from comma separated list to an array.
+# This is needed to support environment variables
+readarray -td, DATABASES <<<"$DBLIST";
+
+OUTPUT_FOLDER=${OUTPUT_FOLDER:-"$AC_PATH_ROOT/env/dist/sql/"}
 
-OUTPUT_FOLDER="$AC_PATH_ROOT/env/dist/sql/"
+DBASM_WAIT_TIMEOUT=${DBASM_WAIT_TIMEOUT:-1}
+DBASM_WAIT_RETRIES=${DBASM_WAIT_RETRIES:-3}
 
 ####### BACKUP
 # Set to true if you want to backup your azerothcore databases before importing the SQL with the db_assembler
@@ -163,23 +180,23 @@ DB_MYSQL_EXEC="mysql"
 DB_MYSQL_DUMP_EXEC="mysqldump"
 
 
-DB_AUTH_CONF="MYSQL_USER='acore'; \
+DB_AUTH_CONF=${DB_AUTH_CONF:-"MYSQL_USER='acore'; \
                     MYSQL_PASS='acore'; \
                     MYSQL_HOST='localhost';\
                     MYSQL_PORT='3306';\
-                    "
+                    "}
 
-DB_CHARACTERS_CONF="MYSQL_USER='acore'; \
+DB_CHARACTERS_CONF=${DB_CHARACTERS_CONF:-"MYSQL_USER='acore'; \
                     MYSQL_PASS='acore'; \
                     MYSQL_HOST='localhost';\
                     MYSQL_PORT='3306';\
-                    "
+                    "}
 
-DB_WORLD_CONF="MYSQL_USER='acore'; \
+DB_WORLD_CONF=${DB_WORLD_CONF:-"MYSQL_USER='acore'; \
                     MYSQL_PASS='acore'; \
                     MYSQL_HOST='localhost';\
                     MYSQL_PORT='3306';\
-                    "
+                    "}
 
 DB_AUTH_NAME="acore_auth"
 
diff --git a/conf/dist/docker-compose.override.yml b/conf/dist/docker-compose.override.yml
new file mode 100644
index 0000000000..1e71bd8c64
--- /dev/null
+++ b/conf/dist/docker-compose.override.yml
@@ -0,0 +1,4 @@
+version: '3.8'
+# services:
+#   ac-worldserver-2:
+
diff --git a/conf/dist/env.ac b/conf/dist/env.ac
new file mode 100644
index 0000000000..0639e2349f
--- /dev/null
+++ b/conf/dist/env.ac
@@ -0,0 +1,31 @@
+#
+# GENERAL
+#
+
+USER_CONF_PATH=/azerothcore/apps/docker/config-docker.sh
+DATAPATH=/azerothcore/env/dist/data
+
+#
+# COMPILER
+#
+CTYPE=RelWithDebInfo
+CSCRIPTS=ON
+
+#
+# DATABASE
+#
+
+OUTPUT_FOLDER=/azerothcore/var/build/sql/
+
+DB_AUTH_CONF="MYSQL_USER='root'; MYSQL_PASS='password'; MYSQL_HOST='ac-database'; MYSQL_PORT='3306';"
+
+DB_CHARACTERS_CONF="MYSQL_USER='root'; MYSQL_PASS='password'; MYSQL_HOST='ac-database'; MYSQL_PORT='3306';"
+
+DB_WORLD_CONF="MYSQL_USER='root'; MYSQL_PASS='password'; MYSQL_HOST='ac-database'; MYSQL_PORT='3306';"
+
+#
+# SIMPLE RESTARTER
+#
+AC_RESTARTER_BINPATH=
+AC_RESTARTER_BINFILE=
+AC_RESTARTER_WITHGDB=
diff --git a/conf/dist/env.docker b/conf/dist/env.docker
new file mode 100644
index 0000000000..28e91af917
--- /dev/null
+++ b/conf/dist/env.docker
@@ -0,0 +1,23 @@
+#
+# Create a .env file in the root folder and use the following
+# variables to configure your docker-compose
+#
+
+DOCKER_AC_ENV_FILE=
+
+DOCKER_DATA=./env/docker/data
+DOCKER_ETC=./env/docker/etc
+DOCKER_LOGS=./env/docker/logs
+DOCKER_CONF=./conf
+
+DOCKER_WORLD_EXTERNAL_PORT=8085
+DOCKER_AUTH_EXTERNAL_PORT=3724
+DOCKER_DB_EXTERNAL_PORT=3306
+DOCKER_DB_ROOT_PASSWORD=password
+DOCKER_SOAP_EXTERNAL_PORT=7878
+
+# To maximize the performance on MAC you can change the DOCKER_EXTENDS_BIND variable
+# to "abstract-no-bind", however it won't bind the host directory inside the container.
+# It means that you need to work directly within the container using a tool
+# like the VScode dev-container of the remote-extension suite
+DOCKER_EXTENDS_BIND=abstract-bind