MAPG-7 implement install and update scripts

minor adaptations for paths, environment variables and Dockerfile

db/mapguesser.sql

@@ -0,0 +1,27 @@
+SET NAMES utf8mb4;
+SET foreign_key_checks = 0;
+
+
+DROP TABLE IF EXISTS `maps`;
+CREATE TABLE `maps` (
+  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) NOT NULL,
+  `description` text NOT NULL,
+  `bound_south_lat` decimal(8,6) NOT NULL,
+  `bound_west_lng` decimal(9,6) NOT NULL,
+  `bound_north_lat` decimal(8,6) NOT NULL,
+  `bound_east_lng` decimal(9,6) NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+
+DROP TABLE IF EXISTS `places`;
+CREATE TABLE `places` (
+  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  `map_id` int(10) unsigned NOT NULL,
+  `lat` decimal(8,6) NOT NULL,
+  `lng` decimal(9,6) NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `map_id` (`map_id`),
+  CONSTRAINT `places_map_id` FOREIGN KEY (`map_id`) REFERENCES `maps` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;