Implement PostgreSQL support and update database configuration: Migrate from SQLite to PostgreSQL by updating the Prisma schema, Docker configuration, and environment variables. Add PostgreSQL dependencies and adjust the database connection logic in the application. Enhance .gitignore to exclude PostgreSQL-related files and directories.

prisma/migrations.sqlite.backup/20251210044500_remove_event_status_field/migration.sql

@@ -0,0 +1,20 @@
+-- RedefineTables
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "_Event_new" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "date" DATETIME NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+    "room" TEXT,
+    "time" TEXT,
+    "maxPlaces" INTEGER,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL
+);
+INSERT INTO "_Event_new" ("id", "date", "name", "description", "type", "room", "time", "maxPlaces", "createdAt", "updatedAt") SELECT "id", "date", "name", "description", "type", "room", "time", "maxPlaces", "createdAt", "updatedAt" FROM "Event";
+DROP TABLE "Event";
+ALTER TABLE "_Event_new" RENAME TO "Event";
+CREATE INDEX "Event_date_idx" ON "Event"("date");
+PRAGMA foreign_keys=ON;
+