Added db configurations and Dockerfile

scripts/database/db.sql

@@ -0,0 +1,13 @@
+CREATE TABLE IF NOT EXISTS documents
+(
+    id          SERIAL PRIMARY KEY,
+    name        TEXT                        NOT NULL,
+    id_file     UUID UNIQUE                 NOT NULL,
+    fingerprint TEXT UNIQUE                 NOT NULL,
+    created_at  TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT now(),
+    updated_at  TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT now(),
+    deleted_at  TIMESTAMP WITHOUT TIME ZONE
+);
+
+-- Crea un indice su deleted_at per il supporto soft delete
+CREATE INDEX IF NOT EXISTS idx_documents_deleted_at ON documents (deleted_at);