diff --git a/backend/Dockerfile b/backend/Dockerfile
index bf25c92..359d907 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,16 +1,26 @@
-FROM pnpm/pnpm:22 AS base
+FROM node:22-slim AS base
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable && corepack prepare pnpm@latest --activate
 
 FROM base AS build
 WORKDIR /usr/src/app
+COPY pnpm-lock.yaml pnpm-workspace.yaml package.json ./
+COPY backend/package.json ./backend/
+COPY frontend/package.json ./frontend/
+COPY documentation/package.json ./documentation/
+RUN pnpm install --no-frozen-lockfile
 COPY . .
-RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+# On réinstalle après COPY pour s'assurer que tous les scripts de cycle de vie et les liens sont corrects
+RUN pnpm install --no-frozen-lockfile
 RUN pnpm run --filter @memegoat/backend build
-RUN pnpm deploy --filter=@memegoat/backend --prod /app
+RUN pnpm deploy --filter=@memegoat/backend --prod --legacy /app
+RUN cp -r backend/dist /app/dist
+RUN cp -r backend/.migrations /app/.migrations
 
 FROM base AS runtime
 WORKDIR /app
 COPY --from=build /app .
 EXPOSE 3000
-CMD [ "node", "dist/main" ]
+ENV NODE_ENV=production
+CMD [ "node", "dist/src/main" ]
diff --git a/backend/package.json b/backend/package.json
index 7a7996f..3e07cc6 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -6,7 +6,9 @@
 	"private": true,
 	"license": "UNLICENSED",
 	"files": [
-		"dist"
+		"dist",
+		".migrations",
+		"drizzle.config.ts"
 	],
 	"scripts": {
 		"build": "nest build",
@@ -60,24 +62,11 @@
 		"rxjs": "^7.8.1",
 		"sharp": "^0.34.5",
 		"uuid": "^13.0.0",
-		"zod": "^4.3.5"
+		"zod": "^4.3.5",
+		"drizzle-kit": "^0.31.8"
 	},
 	"devDependencies": {
 		"@nestjs/cli": "^11.0.0",
-		"@nestjs/schematics": "^11.0.0",
-		"@nestjs/testing": "^11.0.1",
-		"@types/express": "^5.0.0",
-		"@types/fluent-ffmpeg": "^2.1.28",
-		"@types/jest": "^30.0.0",
-		"@types/multer": "^2.0.0",
-		"@types/node": "^22.10.7",
-		"@types/nodemailer": "^7.0.4",
-		"@types/pg": "^8.16.0",
-		"@types/qrcode": "^1.5.6",
-		"@types/sharp": "^0.32.0",
-		"@types/supertest": "^6.0.2",
-		"@types/uuid": "^11.0.0",
-		"drizzle-kit": "^0.31.8",
 		"globals": "^16.0.0",
 		"jest": "^30.0.0",
 		"source-map-support": "^0.5.21",
@@ -87,6 +76,12 @@
 		"ts-node": "^10.9.2",
 		"tsconfig-paths": "^4.2.0",
 		"tsx": "^4.21.0",
+		"@types/express": "^5.0.0",
+		"@types/multer": "^1.4.12",
+		"@types/jest": "^29.5.14",
+		"@types/node": "^22.10.7",
+		"@types/pg": "^8.11.10",
+		"@types/supertest": "^6.0.2",
 		"typescript": "^5.7.3",
 		"typescript-eslint": "^8.20.0"
 	},
diff --git a/backend/src/api-keys/api-keys.module.ts b/backend/src/api-keys/api-keys.module.ts
index 9f49ed9..b3f644a 100644
--- a/backend/src/api-keys/api-keys.module.ts
+++ b/backend/src/api-keys/api-keys.module.ts
@@ -1,4 +1,4 @@
-import { Module } from "@nestjs/common";
+import { forwardRef, Module } from "@nestjs/common";
 import { AuthModule } from "../auth/auth.module";
 import { CryptoModule } from "../crypto/crypto.module";
 import { DatabaseModule } from "../database/database.module";
@@ -7,9 +7,9 @@ import { ApiKeysService } from "./api-keys.service";
 import { ApiKeysRepository } from "./repositories/api-keys.repository";
 
 @Module({
-	imports: [DatabaseModule, AuthModule, CryptoModule],
+	imports: [DatabaseModule, forwardRef(() => AuthModule), CryptoModule],
 	controllers: [ApiKeysController],
 	providers: [ApiKeysService, ApiKeysRepository],
-	exports: [ApiKeysService],
+	exports: [ApiKeysService, ApiKeysRepository],
 })
 export class ApiKeysModule {}
diff --git a/backend/src/auth/auth.module.ts b/backend/src/auth/auth.module.ts
index 5d44d45..303727c 100644
--- a/backend/src/auth/auth.module.ts
+++ b/backend/src/auth/auth.module.ts
@@ -17,6 +17,6 @@ import { RbacRepository } from "./repositories/rbac.repository";
 	],
 	controllers: [AuthController],
 	providers: [AuthService, RbacService, RbacRepository],
-	exports: [AuthService, RbacService],
+	exports: [AuthService, RbacService, RbacRepository],
 })
 export class AuthModule {}
diff --git a/backend/src/auth/dto/register.dto.ts b/backend/src/auth/dto/register.dto.ts
index 51c371b..2dbc5ec 100644
--- a/backend/src/auth/dto/register.dto.ts
+++ b/backend/src/auth/dto/register.dto.ts
@@ -1,10 +1,21 @@
-import { IsEmail, IsNotEmpty, IsString, MinLength } from "class-validator";
+import {
+	IsEmail,
+	IsNotEmpty,
+	IsString,
+	MaxLength,
+	MinLength,
+} from "class-validator";
 
 export class RegisterDto {
 	@IsString()
 	@IsNotEmpty()
+	@MaxLength(32)
 	username!: string;
 
+	@IsString()
+	@MaxLength(32)
+	displayName?: string;
+
 	@IsEmail()
 	email!: string;
 
diff --git a/backend/src/categories/categories.module.ts b/backend/src/categories/categories.module.ts
index adf89be..e66aa18 100644
--- a/backend/src/categories/categories.module.ts
+++ b/backend/src/categories/categories.module.ts
@@ -1,13 +1,15 @@
 import { Module } from "@nestjs/common";
+import { AuthModule } from "../auth/auth.module";
+import { CryptoModule } from "../crypto/crypto.module";
 import { DatabaseModule } from "../database/database.module";
 import { CategoriesController } from "./categories.controller";
 import { CategoriesService } from "./categories.service";
 import { CategoriesRepository } from "./repositories/categories.repository";
 
 @Module({
-	imports: [DatabaseModule],
+	imports: [DatabaseModule, AuthModule, CryptoModule],
 	controllers: [CategoriesController],
 	providers: [CategoriesService, CategoriesRepository],
-	exports: [CategoriesService],
+	exports: [CategoriesService, CategoriesRepository],
 })
 export class CategoriesModule {}
diff --git a/backend/src/common/common.module.ts b/backend/src/common/common.module.ts
index 83f544c..279b7c4 100644
--- a/backend/src/common/common.module.ts
+++ b/backend/src/common/common.module.ts
@@ -1,10 +1,20 @@
-import { Global, Module } from "@nestjs/common";
+import { forwardRef, Global, Module } from "@nestjs/common";
+import { ContentsModule } from "../contents/contents.module";
 import { DatabaseModule } from "../database/database.module";
+import { ReportsModule } from "../reports/reports.module";
+import { SessionsModule } from "../sessions/sessions.module";
+import { UsersModule } from "../users/users.module";
 import { PurgeService } from "./services/purge.service";
 
 @Global()
 @Module({
-	imports: [DatabaseModule],
+	imports: [
+		DatabaseModule,
+		forwardRef(() => SessionsModule),
+		forwardRef(() => ReportsModule),
+		forwardRef(() => UsersModule),
+		forwardRef(() => ContentsModule),
+	],
 	providers: [PurgeService],
 	exports: [PurgeService],
 })
diff --git a/backend/src/contents/contents.module.ts b/backend/src/contents/contents.module.ts
index 971cc58..bf08949 100644
--- a/backend/src/contents/contents.module.ts
+++ b/backend/src/contents/contents.module.ts
@@ -12,5 +12,6 @@ import { ContentsRepository } from "./repositories/contents.repository";
 	imports: [DatabaseModule, S3Module, AuthModule, CryptoModule, MediaModule],
 	controllers: [ContentsController],
 	providers: [ContentsService, ContentsRepository],
+	exports: [ContentsRepository],
 })
 export class ContentsModule {}
diff --git a/backend/src/favorites/favorites.module.ts b/backend/src/favorites/favorites.module.ts
index cd58de9..72d1943 100644
--- a/backend/src/favorites/favorites.module.ts
+++ b/backend/src/favorites/favorites.module.ts
@@ -1,13 +1,15 @@
 import { Module } from "@nestjs/common";
+import { AuthModule } from "../auth/auth.module";
+import { CryptoModule } from "../crypto/crypto.module";
 import { DatabaseModule } from "../database/database.module";
 import { FavoritesController } from "./favorites.controller";
 import { FavoritesService } from "./favorites.service";
 import { FavoritesRepository } from "./repositories/favorites.repository";
 
 @Module({
-	imports: [DatabaseModule],
+	imports: [DatabaseModule, AuthModule, CryptoModule],
 	controllers: [FavoritesController],
 	providers: [FavoritesService, FavoritesRepository],
-	exports: [FavoritesService],
+	exports: [FavoritesService, FavoritesRepository],
 })
 export class FavoritesModule {}
diff --git a/backend/src/main.ts b/backend/src/main.ts
index 5eb3a59..3e892ce 100644
--- a/backend/src/main.ts
+++ b/backend/src/main.ts
@@ -24,14 +24,31 @@ async function bootstrap() {
 	}
 
 	// Sécurité
-	app.use(helmet());
-	app.enableCors({
-		origin:
-			configService.get("NODE_ENV") === "production"
-				? [configService.get("DOMAIN_NAME") as string]
-				: true,
-		credentials: true,
-	});
+	app.use(
+		helmet({
+			crossOriginResourcePolicy: { policy: "cross-origin" },
+		}),
+	);
+	const corsEnabled = Boolean(configService.get<boolean>("ENABLE_CORS"));
+	if (corsEnabled) {
+		const domainName = configService.get<string>("CORS_DOMAIN_NAME");
+		app.enableCors({
+			origin: (origin, callback) => {
+				if (!origin || domainName === "*") {
+					callback(null, true);
+					return;
+				}
+
+				const allowedOrigins = domainName?.split(",").map((o) => o.trim()) || [];
+				if (allowedOrigins.includes(origin)) {
+					callback(null, true);
+				} else {
+					callback(null, false);
+				}
+			},
+			credentials: true,
+		});
+	}
 
 	// Validation Globale
 	app.useGlobalPipes(
@@ -49,4 +66,4 @@ async function bootstrap() {
 	await app.listen(port);
 	logger.log(`Application is running on: http://localhost:${port}`);
 }
-bootstrap();
+bootstrap().then();
diff --git a/backend/src/media/media.service.ts b/backend/src/media/media.service.ts
index 982261d..ca26c08 100644
--- a/backend/src/media/media.service.ts
+++ b/backend/src/media/media.service.ts
@@ -5,7 +5,7 @@ import {
 	Logger,
 } from "@nestjs/common";
 import { ConfigService } from "@nestjs/config";
-import * as NodeClam from "clamscan";
+import NodeClam from "clamscan";
 import type {
 	IMediaService,
 	MediaProcessingResult,
diff --git a/backend/src/reports/reports.module.ts b/backend/src/reports/reports.module.ts
index 6e6254a..0f4f576 100644
--- a/backend/src/reports/reports.module.ts
+++ b/backend/src/reports/reports.module.ts
@@ -1,4 +1,4 @@
-import { Module } from "@nestjs/common";
+import { forwardRef, Module } from "@nestjs/common";
 import { AuthModule } from "../auth/auth.module";
 import { CryptoModule } from "../crypto/crypto.module";
 import { DatabaseModule } from "../database/database.module";
@@ -7,8 +7,9 @@ import { ReportsService } from "./reports.service";
 import { ReportsRepository } from "./repositories/reports.repository";
 
 @Module({
-	imports: [DatabaseModule, AuthModule, CryptoModule],
+	imports: [DatabaseModule, forwardRef(() => AuthModule), CryptoModule],
 	controllers: [ReportsController],
 	providers: [ReportsService, ReportsRepository],
+	exports: [ReportsRepository, ReportsService],
 })
 export class ReportsModule {}
diff --git a/backend/src/sessions/sessions.module.ts b/backend/src/sessions/sessions.module.ts
index a5c4367..70aca84 100644
--- a/backend/src/sessions/sessions.module.ts
+++ b/backend/src/sessions/sessions.module.ts
@@ -7,6 +7,6 @@ import { SessionsService } from "./sessions.service";
 @Module({
 	imports: [DatabaseModule, CryptoModule],
 	providers: [SessionsService, SessionsRepository],
-	exports: [SessionsService],
+	exports: [SessionsService, SessionsRepository],
 })
 export class SessionsModule {}
diff --git a/backend/src/tags/tags.module.ts b/backend/src/tags/tags.module.ts
index 456c36a..0e21af0 100644
--- a/backend/src/tags/tags.module.ts
+++ b/backend/src/tags/tags.module.ts
@@ -1,13 +1,15 @@
 import { Module } from "@nestjs/common";
+import { AuthModule } from "../auth/auth.module";
+import { CryptoModule } from "../crypto/crypto.module";
 import { DatabaseModule } from "../database/database.module";
 import { TagsRepository } from "./repositories/tags.repository";
 import { TagsController } from "./tags.controller";
 import { TagsService } from "./tags.service";
 
 @Module({
-	imports: [DatabaseModule],
+	imports: [DatabaseModule, AuthModule, CryptoModule],
 	controllers: [TagsController],
 	providers: [TagsService, TagsRepository],
-	exports: [TagsService],
+	exports: [TagsService, TagsRepository],
 })
 export class TagsModule {}
diff --git a/backend/src/users/users.module.ts b/backend/src/users/users.module.ts
index a15fae5..21678c9 100644
--- a/backend/src/users/users.module.ts
+++ b/backend/src/users/users.module.ts
@@ -10,6 +10,6 @@ import { UsersService } from "./users.service";
 	imports: [DatabaseModule, CryptoModule, forwardRef(() => AuthModule)],
 	controllers: [UsersController],
 	providers: [UsersService, UsersRepository],
-	exports: [UsersService],
+	exports: [UsersService, UsersRepository],
 })
 export class UsersModule {}