diff --git a/Dockerfile b/Dockerfile
index 771e22c..e69c0d9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,12 +28,9 @@ COPY . .
 # Set a dummy DATABASE_URL for build time (Prisma needs it to generate client)
 ENV DATABASE_URL="file:/tmp/build.db"
 
-# Generate Prisma client
+# Generate Prisma client (no DB needed at build time)
 RUN pnpm prisma generate
 
-# Initialize the database schema for build time
-RUN pnpm prisma migrate deploy || pnpm prisma db push
-
 # Build the application
 RUN pnpm run build
 
@@ -65,12 +62,9 @@ RUN chown nextjs:nodejs .next
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
-# Copy Prisma schema
+# Copy Prisma schema and migrations
 COPY --from=builder /app/prisma ./prisma
 
-# Copy scripts (including init-db.js)
-COPY --from=builder /app/scripts ./scripts
-
 # Copy pnpm node_modules (includes .pnpm store with Prisma client)
 COPY --from=builder /app/node_modules ./node_modules
 
@@ -86,5 +80,7 @@ USER nextjs
 
 EXPOSE 3000
 
-# Start the application with smart database initialization
-CMD ["sh", "-c", "node scripts/init-db.js && node server.js"]
+# Start the application with Prisma migrations
+# For fresh DBs: use db push to apply schema, then mark migrations as applied
+# For existing DBs: use migrate deploy to apply incremental migrations
+CMD ["sh", "-c", "set +e; if ! pnpm prisma migrate deploy; then echo 'Migration failed, using db push for fresh database...'; pnpm prisma db push --accept-data-loss --skip-generate; for migration in prisma/migrations/*/; do if [ -d \"$migration\" ] && [ -f \"$migration/migration.sql\" ]; then migration_name=$(basename \"$migration\"); pnpm prisma migrate resolve --applied \"$migration_name\" 2>/dev/null || true; fi; done; fi; set -e; exec node server.js"]
diff --git a/docker-compose.yml b/docker-compose.yml
index 76f106f..990d646 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,16 +5,22 @@ services:
       dockerfile: Dockerfile
       target: runner
     ports:
-      - '3006:3000'
+      - '${PORT:-3007}:3000'
     environment:
-      NODE_ENV: production
-      DATABASE_URL: 'file:../data/dev.db' # Prisma
-      BACKUP_DATABASE_PATH: './data/dev.db' # Base de données à sauvegarder
-      BACKUP_STORAGE_PATH: './data/backups' # Dossier des sauvegardes
-      TZ: Europe/Paris
+      NODE_ENV: ${NODE_ENV:-production}
+      DATABASE_URL: ${DATABASE_URL:-file:../data/dev.db}
+      BACKUP_DATABASE_PATH: ${BACKUP_DATABASE_PATH:-./data/dev.db}
+      BACKUP_STORAGE_PATH: ${BACKUP_STORAGE_PATH:-./data/backups}
+      TZ: ${TZ:-Europe/Paris}
       # NextAuth.js
-      NEXTAUTH_SECRET: 'TbwIWAmQgBcOlg7jRZrhkeEUDTpSr8Cj/Cc7W58fAyw='
-      NEXTAUTH_URL: 'http://localhost:3006'
+      NEXTAUTH_SECRET: ${NEXTAUTH_SECRET:-TbwIWAmQgBcOlg7jRZrhkeEUDTpSr8Cj/Cc7W58fAyw=}
+      NEXTAUTH_URL: ${NEXTAUTH_URL:-http://localhost:3006}
+      # Jira (optionnel)
+      JIRA_BASE_URL: ${JIRA_BASE_URL:-}
+      JIRA_EMAIL: ${JIRA_EMAIL:-}
+      JIRA_API_TOKEN: ${JIRA_API_TOKEN:-}
+      # Debug
+      VERBOSE_LOGGING: ${VERBOSE_LOGGING:-false}
     volumes:
       - ./data:/app/data # Dossier local data/ vers /app/data
     restart: unless-stopped
@@ -31,16 +37,22 @@ services:
       dockerfile: Dockerfile
       target: base
     ports:
-      - '3005:3000'
+      - '${PORT_DEV:-3005}:3000'
     environment:
-      NODE_ENV: development
-      DATABASE_URL: 'file:../data/dev.db' # Prisma
-      BACKUP_DATABASE_PATH: './data/dev.db' # Base de données à sauvegarder
-      BACKUP_STORAGE_PATH: './data/backups' # Dossier des sauvegardes
-      TZ: Europe/Paris
+      NODE_ENV: ${NODE_ENV:-development}
+      DATABASE_URL: ${DATABASE_URL:-file:../data/dev.db}
+      BACKUP_DATABASE_PATH: ${BACKUP_DATABASE_PATH:-./data/dev.db}
+      BACKUP_STORAGE_PATH: ${BACKUP_STORAGE_PATH:-./data/backups}
+      TZ: ${TZ:-Europe/Paris}
       # NextAuth.js
-      NEXTAUTH_SECRET: 'TbwIWAmQgBcOlg7jRZrhkeEUDTpSr8Cj/Cc7W58fAyw='
-      NEXTAUTH_URL: 'http://localhost:3005'
+      NEXTAUTH_SECRET: ${NEXTAUTH_SECRET:-TbwIWAmQgBcOlg7jRZrhkeEUDTpSr8Cj/Cc7W58fAyw=}
+      NEXTAUTH_URL: ${NEXTAUTH_URL:-http://localhost:3005}
+      # Jira (optionnel)
+      JIRA_BASE_URL: ${JIRA_BASE_URL:-}
+      JIRA_EMAIL: ${JIRA_EMAIL:-}
+      JIRA_API_TOKEN: ${JIRA_API_TOKEN:-}
+      # Debug
+      VERBOSE_LOGGING: ${VERBOSE_LOGGING:-false}
     volumes:
       - .:/app # code en live
       - /app/node_modules # vol anonyme pour ne pas écraser ceux du conteneur
@@ -49,7 +61,7 @@ services:
     command: >
       sh -c "pnpm install &&
              pnpm prisma generate &&
-             node scripts/init-db.js &&
+             (pnpm prisma migrate deploy || (echo 'Migration failed, using db push for fresh database...' && pnpm prisma db push --accept-data-loss --skip-generate && for migration in prisma/migrations/*/; do if [ -d \"\$migration\" ] && [ -f \"\$migration/migration.sql\" ]; then migration_name=\$(basename \"\$migration\"); pnpm prisma migrate resolve --applied \"\$migration_name\" 2>/dev/null || true; fi; done)) &&
              pnpm run dev"
     profiles:
       - dev
@@ -59,5 +71,6 @@ services:
 # ├── dev.db       -> Base de données développement
 # └── backups/     -> Sauvegardes automatiques
 #
-# 🔧 Configuration via .env.docker
-# 📚 Documentation : ./data/README.md
+# 🔧 Configuration via variables d'environnement (.env ou .env.local)
+# Les variables utilisent la syntaxe ${VAR:-default} pour les fallbacks
+# 📚 Documentation : ./data/README.md et env.example
diff --git a/scripts/init-db.js b/scripts/init-db.js
deleted file mode 100755
index b73a9eb..0000000
--- a/scripts/init-db.js
+++ /dev/null
@@ -1,64 +0,0 @@
-#!/usr/bin/env node
-/**
- * Smart database initialization script
- * - Fresh DB (no tables) -> prisma db push (fast, applies full schema)
- * - Existing DB with data -> prisma migrate deploy (safe, incremental)
- */
-
-const { execSync } = require('child_process');
-const fs = require('fs');
-const path = require('path');
-
-function exec(command) {
-  try {
-    return execSync(command, { encoding: 'utf-8', stdio: 'pipe' });
-  } catch (error) {
-    return null;
-  }
-}
-
-function getDatabasePath() {
-  const dbUrl = process.env.DATABASE_URL || 'file:./data/prod.db';
-  // Extract path from SQLite URL (file:./path or file:/absolute/path)
-  return dbUrl.replace(/^file:/, '');
-}
-
-function isDatabaseEmpty() {
-  const dbPath = getDatabasePath();
-  const absolutePath = path.resolve(dbPath);
-  
-  console.log(`🔍 Checking database at: ${absolutePath}`);
-  
-  // Si le fichier DB n'existe pas, c'est vide
-  if (!fs.existsSync(absolutePath)) {
-    console.log('📦 Database file does not exist - fresh install');
-    return true;
-  }
-  
-  // Vérifier si des tables existent
-  const result = exec('pnpm prisma db execute --stdin <<< ".tables"');
-  if (!result || result.trim() === '') {
-    console.log('📦 Database exists but has no tables - fresh install');
-    return true;
-  }
-  
-  console.log('🔄 Database has existing tables');
-  return false;
-}
-
-function main() {
-  console.log('🚀 Starting database initialization...\n');
-  
-  if (isDatabaseEmpty()) {
-    console.log('✨ Applying full schema with prisma db push...');
-    execSync('pnpm prisma db push --skip-generate', { stdio: 'inherit' });
-  } else {
-    console.log('📝 Applying migrations with prisma migrate deploy...');
-    execSync('pnpm prisma migrate deploy', { stdio: 'inherit' });
-  }
-  
-  console.log('\n✅ Database ready!');
-}
-
-main();
-