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📝 docs(staging): add troubleshooting for pre-compressed configs and caching
- Document SvelteKit pre-compressed files issue (.br, .gz) causing wrong config - Add Caddy response caching troubleshooting - Add Docker disk space cleanup guide - Update "Adding a New App" with complete docker-entrypoint.sh template - Include runtime config pattern (runtime.ts, static/config.json) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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1 changed files with 176 additions and 19 deletions
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@ -342,6 +342,84 @@ docker logs <container-name>
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docker inspect <container-name> | grep -A 20 Health
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```
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### SvelteKit Pre-Compressed Config Files (IMPORTANT)
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**Symptom:** Browser calls `localhost:3001` instead of staging URLs, even though:
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- Server logs show correct config was generated
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- `docker exec <container> cat .../config.json` shows correct values
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- `curl https://app.staging.manacore.ai/config.json` shows wrong (localhost) values
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**Root Cause:** SvelteKit pre-compresses static files during build:
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- `config.json` - raw file (overwritten by entrypoint ✓)
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- `config.json.br` - Brotli compressed (stale from build ✗)
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- `config.json.gz` - Gzip compressed (stale from build ✗)
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When browsers send `Accept-Encoding: gzip, br`, SvelteKit serves the pre-compressed versions, which contain the old localhost values from build time.
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**Solution (Permanent):** The `docker-entrypoint.sh` must delete pre-compressed files:
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```bash
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# After generating config.json, remove stale compressed versions
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rm -f /app/apps/<app>/apps/web/build/client/config.json.br
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rm -f /app/apps/<app>/apps/web/build/client/config.json.gz
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```
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**Solution (Quick Fix):** For immediate fix without redeploying:
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```bash
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# Remove compressed files and restart
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docker exec <app>-web-staging rm -f /app/apps/<app>/apps/web/build/client/config.json.br /app/apps/<app>/apps/web/build/client/config.json.gz
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docker restart <app>-web-staging
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docker restart caddy # Clear any Caddy cache
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```
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**Diagnosis Commands:**
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```bash
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# Check if pre-compressed files exist
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docker exec <app>-web-staging ls -la /app/apps/<app>/apps/web/build/client/config.json*
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# Test what browser receives (from local machine, not server)
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curl https://<app>.staging.manacore.ai/config.json
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# Compare file content vs HTTP response
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docker exec <app>-web-staging cat /app/apps/<app>/apps/web/build/client/config.json
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# vs
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curl https://<app>.staging.manacore.ai/config.json
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```
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### Caddy Response Caching
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**Symptom:** After fixing config.json on the server, `curl` still returns old values
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**Solution:**
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```bash
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# Restart Caddy to clear any cached responses
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docker restart caddy
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```
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### Disk Space Full (Docker)
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**Symptom:** CI/CD deployment fails with "no space left on device"
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**Cause:** Docker images, containers, and build cache accumulating over time
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**Solution (Immediate):**
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```bash
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ssh -i ~/.ssh/hetzner_deploy_key deploy@46.224.108.214
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# Check disk usage
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df -h
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# Clean up all unused Docker resources
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docker system prune -af --volumes
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docker builder prune -af
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```
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**Solution (Preventive):** Set up a weekly cleanup cronjob:
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```bash
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crontab -e
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# Add this line (runs every Sunday at 3 AM):
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0 3 * * 0 docker system prune -af --volumes >> /home/deploy/docker-cleanup.log 2>&1
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```
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## Adding a New App to Staging
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### 1. Update DNS (if needed)
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@ -376,30 +454,109 @@ newapp-web:
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- "<WEB_PORT>:<WEB_PORT>"
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```
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### 4. Implement hooks.server.ts
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### 4. Create docker-entrypoint.sh (CRITICAL)
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Copy the runtime env var pattern from an existing app:
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```typescript
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import type { Handle } from '@sveltejs/kit';
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import { env } from '$env/dynamic/private';
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Create `apps/<app>/apps/web/docker-entrypoint.sh`:
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```bash
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#!/bin/sh
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set -e
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export const handle: Handle = async ({ event, resolve }) => {
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const authUrlClient = env.PUBLIC_MANA_CORE_AUTH_URL_CLIENT || '';
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const backendUrlClient = env.PUBLIC_BACKEND_URL_CLIENT || '';
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echo "🔧 Generating runtime configuration..."
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return resolve(event, {
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transformPageChunk: ({ html }) => {
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const envScript = `<script>
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window.__PUBLIC_MANA_CORE_AUTH_URL__ = "${authUrlClient}";
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window.__PUBLIC_BACKEND_URL__ = "${backendUrlClient}";
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</script>`;
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return html.replace('<head>', `<head>${envScript}`);
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},
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});
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};
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# Environment variables with development defaults
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BACKEND_URL=${BACKEND_URL:-"http://localhost:<PORT>"}
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AUTH_URL=${AUTH_URL:-"http://localhost:3001"}
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echo "📝 Config values:"
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echo " BACKEND_URL: $BACKEND_URL"
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echo " AUTH_URL: $AUTH_URL"
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# Generate config.json from environment variables
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cat > /app/apps/<app>/apps/web/build/client/config.json <<EOF
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{
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"BACKEND_URL": "${BACKEND_URL}",
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"AUTH_URL": "${AUTH_URL}"
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}
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EOF
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echo "✅ Configuration generated at /app/apps/<app>/apps/web/build/client/config.json"
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cat /app/apps/<app>/apps/web/build/client/config.json
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# CRITICAL: Remove pre-compressed versions (SvelteKit serves these instead of raw file)
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rm -f /app/apps/<app>/apps/web/build/client/config.json.br
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rm -f /app/apps/<app>/apps/web/build/client/config.json.gz
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echo "🗑️ Removed stale pre-compressed config files"
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echo "🚀 Starting <App> web app..."
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exec "$@"
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```
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### 5. Deploy
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Make sure the Dockerfile copies and uses this entrypoint:
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```dockerfile
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COPY apps/<app>/apps/web/docker-entrypoint.sh /usr/local/bin/
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RUN chmod +x /usr/local/bin/docker-entrypoint.sh
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ENTRYPOINT ["docker-entrypoint.sh"]
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CMD ["node", "build"]
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```
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### 5. Create static/config.json for local development
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Create `apps/<app>/apps/web/static/config.json` for local dev (this gets overwritten at runtime in Docker):
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```json
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{
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"BACKEND_URL": "http://localhost:<PORT>",
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"AUTH_URL": "http://localhost:3001"
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}
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```
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### 6. Implement runtime.ts config loader
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Create `apps/<app>/apps/web/src/lib/config/runtime.ts`:
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```typescript
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import { browser, dev } from '$app/environment';
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export interface RuntimeConfig {
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BACKEND_URL: string;
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AUTH_URL: string;
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}
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const DEV_CONFIG: RuntimeConfig = {
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BACKEND_URL: 'http://localhost:<PORT>',
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AUTH_URL: 'http://localhost:3001',
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};
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let cachedConfig: RuntimeConfig | null = null;
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export async function getConfig(): Promise<RuntimeConfig> {
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if (!browser) return DEV_CONFIG;
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if (cachedConfig) return cachedConfig;
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try {
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const res = await fetch('/config.json');
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if (!res.ok) {
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if (dev) return DEV_CONFIG;
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throw new Error(`Failed to load config: ${res.status}`);
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}
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cachedConfig = await res.json();
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return cachedConfig!;
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} catch (error) {
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if (dev) return DEV_CONFIG;
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throw error;
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}
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}
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export async function getAuthUrl(): Promise<string> {
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const config = await getConfig();
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return config.AUTH_URL;
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}
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export async function getBackendUrl(): Promise<string> {
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const config = await getConfig();
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return config.BACKEND_URL;
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}
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```
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### 7. Deploy
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1. Sync Caddyfile: `scp ... Caddyfile.staging deploy@server:~/Caddyfile`
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2. Reload Caddy: `docker exec caddy caddy reload --config /etc/caddy/Caddyfile`
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