restructured repo + created README.md

db/mysql/docker-compose.yml

@@ -0,0 +1,11 @@
+services:
+  mysql_db:
+    image: mysql:latest
+    restart: unless-stopped
+    environment:
+      - MYSQL_ROOT_PASSWORD=${DB_ROOT_PW}
+      - MYSQL_USER=${DB_USER}
+      - MYSQL_PASSWORD=${DB_PW}
+      - MYSQL_DATABASE=${DB_NAME}
+    volumes:
+      - ${DB_PATH}:/var/lib/mysql