add gitea-mariadb docker-compose

gitea-mariadb/README.md

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+# Setup gitea with Postgres DB server on Docker
+
+1. Start docker
+
+```
+$ docker-composer up -d
+```
+
+4. Stop server
+```
+$ docker-compose down
+```
+
+## Setup mySQL Database. Enter 'Y' for all question
+- Goto mariadb shell
+
+```shell
+$ docker exec -it gitea-db-1 bash
+```
+
+- Inside the container enter the following to setup the initial database
+```
+$ mysql_secure_installation
+```
+
+```
+$ mysql -u root
+```
+
+
+- Allow from localhost ONLY
+```
+CREATE DATABASE gitea;
+
+GRANT ALL PRIVILEGES ON gitea.* TO 'gitea'@'localhost' IDENTIFIED BY 'ENTERPASSWORD';
+
+FLUSH PRIVILEGES;
+
+exit
+```
+
+- Allow from subnet ONLY (172.24.*.*)
+```
+CREATE DATABASE gitea;
+
+GRANT ALL PRIVILEGES ON gitea.* TO 'gitea'@'172.24.%' IDENTIFIED BY 'ENTERPASSWORD';
+
+FLUSH PRIVILEGES;
+
+exit
+```
+
+- Then, continue with gitea setup
+- [Gitea Installation](http://localhost:3000)
+- ![mySQL setup](./docker-gitea-mysql.PNG)

gitea-mariadb/docker-compose.yml

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+version: "3"
+
+networks:
+  gitea:
+    external: false
+
+services:
+  server:
+    image: gitea/gitea:1.17.3
+    container_name: gitea
+    environment:
+      - USER_UID=1000
+      - USER_GID=1000
+      # - GITEA__database__DB_TYPE=mysql
+      # - GITEA__database__HOST=db:3306
+      # - GITEA__database__NAME=gitea
+      # - GITEA__database__USER=gitea
+      # - GITEA__database__PASSWD=gitea
+    restart: always
+    networks:
+      - gitea
+    volumes:
+      - ./gitea:/data
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    ports:
+      - "3000:3000"
+      - "222:22"
+    depends_on:
+      - db
+  db:
+    image: mariadb
+    restart: always
+    environment:
+      MARIADB_ROOT_PASSWORD: gitea
+    ports:
+      - 3306:3306
+    networks:
+      - gitea
+    volumes:
+      - ./mysql:/var/lib/mysql
+
+  adminer:
+    image: adminer
+    restart: always
+    ports:
+      - 8080:8080
+    networks:
+      - gitea