feat: add force sync option for db, don't alter by default

.env.sample

@@ -6,6 +6,7 @@ DB_USER=root
 DB_PASS=root
 DB_HOST=db # If using docker compose, this should match the container service name
 DB_PORT=5432
+DB_FORCE_SYNC=false # Whether or not to DROP all tables and recreate to match the current models
 ALLOW_REGISTRATION=true
 HTTP_INTERFACE=0.0.0.0
 HTTP_PORT=3000

models/index.model.js

@@ -37,8 +37,14 @@ for (const modelDefiner of modelDefiners) {
   modelDefiner(sequelize);
 }
 
-// Create tables if they don't exist
-// Update columns to match if the table already exists
-sequelize.sync({ alter: true });
+/**
+ * Synchronise the database (create new tables) to match the models defined
+ * above.
+ *
+ * WARNING: If force is set, sequelize will delete columns and create new ones
+ *          if their types have changed!
+ *          Use sequelize-cli and migrations instead!
+ */
+sequelize.sync({ force: process.env.DB_FORCE_SYNC });
 
 export default sequelize;