fix: move admin panel build to runtime (entrypoint) so HF Secrets are available during build

Dockerfile

@@ -31,14 +31,6 @@ ENV HOST=0.0.0.0
 ENV PORT=7860
 ENV NODE_ENV=production
 
-# 管理画面をビルド（ビルド時はダミー値でOK、実行時にHF Secretsで上書き）
-RUN APP_KEYS=build1,build2,build3,build4 \
-    JWT_SECRET=build-jwt-placeholder \
-    ADMIN_JWT_SECRET=build-admin-jwt-placeholder \
-    API_TOKEN_SALT=build-token-salt \
-    NODE_ENV=production \
-    npm run build
-
 EXPOSE 7860
 
 ENTRYPOINT ["/docker-entrypoint.sh"]

docker-entrypoint.sh

@@ -7,5 +7,14 @@ DB_URL="postgresql://$DATABASE_USERNAME@$DATABASE_HOST:$DATABASE_PORT/$DATABASE_
 echo "=== Ensuring strapi schema exists ==="
 psql "$DB_URL" -c "CREATE SCHEMA IF NOT EXISTS strapi;" 2>/dev/null && echo "Schema ready"
 
+# 管理画面を初回のみビルド（起動時に実行 = シークレットが使える）
+if [ ! -f "/srv/app/build/index.html" ]; then
+  echo "=== Building Strapi admin panel (first run) ==="
+  cd /srv/app && NODE_ENV=production npm run build
+  echo "=== Admin panel build done ==="
+else
+  echo "=== Admin panel already built, skipping ==="
+fi
+
 echo "=== Starting Strapi ==="
 exec /srv/app/node_modules/.bin/strapi start