feat: add migration support for VPS deployment with backup functionality

docs/vps-deployment.md

@@ -120,6 +120,34 @@ If the Caddy container also needs to be recreated:
 DEPLOY_CADDY=1 pnpm deploy:vps
 ```
 
+## Payload Migrations
+
+Routine deploys do not run migrations. For schema-changing commits, create and
+commit the Payload migration files, then deploy with migrations enabled:
+
+```bash
+RUN_MIGRATIONS=1 pnpm deploy:vps
+```
+
+That mode:
+
+1. syncs the committed code
+2. builds the new Docker image
+3. stops the app container
+4. copies `shared/content.db` to `backups/content-*-pre-migrate.db`
+5. runs `pnpm payload migrate` in a one-off app container
+6. starts the app container again
+
+To run migrations against the already deployed code/image without syncing code:
+
+```bash
+pnpm vps:migrate
+```
+
+Run migrations only when the commit includes migration files under
+`src/migrations/`. For plain frontend/content-rendering changes, use the normal
+`pnpm deploy:vps` path.
+
 ## Status And Logs
 
 ```bash

package.json

@@ -42,6 +42,7 @@
     "test:e2e": "cross-env NODE_OPTIONS=\"--no-deprecation --import=tsx/esm\" playwright test --config=playwright.config.ts",
     "test:int": "cross-env NODE_OPTIONS=--no-deprecation vitest run --config ./vitest.config.mts",
     "vps:backup-db": "bash scripts/vps-backup-db.sh",
+    "vps:migrate": "bash scripts/vps-migrate.sh",
     "vps:rollback:n8n": "bash scripts/vps-rollback-n8n.sh",
     "vps:status": "bash scripts/vps-status.sh"
   },

scripts/deploy-vps.sh

@@ -13,6 +13,7 @@ APP_DOMAIN="${APP_DOMAIN:-srv1.bayerischer-mittelstandspreis.de}"
 PUBLIC_URL="${PUBLIC_URL:-https://$APP_DOMAIN}"
 ALLOW_DIRTY="${ALLOW_DIRTY:-0}"
 DEPLOY_CADDY="${DEPLOY_CADDY:-0}"
+RUN_MIGRATIONS="${RUN_MIGRATIONS:-0}"
 SKIP_VERIFY="${SKIP_VERIFY:-0}"
 
 SSH_TARGET="$SSH_USER@$VPS_HOST"
@@ -53,7 +54,26 @@ ssh -i "$SSH_KEY" -p "$VPS_PORT" "$SSH_TARGET" "
   set -e
   cd '$APP_ROOT'
   APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' build app
+  if [ '$RUN_MIGRATIONS' = '1' ]; then
+    backup_dir='$APP_ROOT/backups'
+    backup_file=\"\$backup_dir/content-\$(date +%Y%m%d-%H%M%S)-pre-migrate.db\"
+
+    sudo install -d -o '$SSH_USER' -g '$SSH_USER' \"\$backup_dir\"
+
+    restart_app() {
+      APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' up -d app >/dev/null
+    }
+
+    trap restart_app EXIT
+    APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' stop app >/dev/null
+    cp -p '$APP_ROOT/shared/content.db' \"\$backup_file\"
+    echo \"Created pre-migration backup: \$backup_file\"
+    APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' run --rm --no-deps app pnpm payload migrate
+    restart_app
+    trap - EXIT
+  else
     APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' up -d app
+  fi
   if [ '$DEPLOY_CADDY' = '1' ]; then
     APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' up -d caddy
   fi

scripts/vps-migrate.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SSH_USER="${SSH_USER:-syntaxbullet}"
+VPS_HOST="${VPS_HOST:-srv1.bayerischer-mittelstandspreis.de}"
+VPS_PORT="${VPS_PORT:-22}"
+SSH_KEY="${SSH_KEY:-$HOME/.ssh/bmp-vps-deploy}"
+APP_ROOT="${APP_ROOT:-/var/www/bmp-website}"
+APP_DOMAIN="${APP_DOMAIN:-srv1.bayerischer-mittelstandspreis.de}"
+
+SSH_TARGET="$SSH_USER@$VPS_HOST"
+COMPOSE_FILE="$APP_ROOT/current/deploy/vps/docker-compose.yml"
+
+ssh -i "$SSH_KEY" -p "$VPS_PORT" "$SSH_TARGET" "
+  set -e
+  cd '$APP_ROOT'
+
+  backup_dir='$APP_ROOT/backups'
+  backup_file=\"\$backup_dir/content-\$(date +%Y%m%d-%H%M%S)-pre-migrate.db\"
+
+  sudo install -d -o '$SSH_USER' -g '$SSH_USER' \"\$backup_dir\"
+
+  restart_app() {
+    APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' up -d app >/dev/null
+  }
+
+  trap restart_app EXIT
+  APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' stop app >/dev/null
+  cp -p '$APP_ROOT/shared/content.db' \"\$backup_file\"
+  echo \"Created pre-migration backup: \$backup_file\"
+  APP_ROOT='$APP_ROOT' APP_DOMAIN='$APP_DOMAIN' sudo docker compose -f '$COMPOSE_FILE' run --rm --no-deps app pnpm payload migrate
+  restart_app
+  trap - EXIT
+
+  sudo docker ps --format 'table {{.Names}}\t{{.Image}}\t{{.Status}}\t{{.Ports}}'
+"