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add an alternative to browserless, for lightweight servers

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Amruth Pillai
2026-01-21 23:24:37 +01:00
parent 4d72a953dd
commit 5d73998f82
9 changed files with 120 additions and 86 deletions
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docs/self-hosting/docker.mdx
+28 -11
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@@ -64,11 +64,9 @@ APP_URL="http://localhost:3000"
PRINTER_APP_URL="http://host.docker.internal:3000"
# --- Printer ---
PRINTER_ENDPOINT="http://printer:3000"
# Printer Authentication (Optional)
# If using browserless with a token, set PRINTER_TOKEN
# PRINTER_TOKEN=""
# If using browserless with token authentication, include the token as a query parameter:
# PRINTER_ENDPOINT="ws://printer:3000?token=your-secret-token"
PRINTER_ENDPOINT="ws://printer:3000"
# --- Database (PostgreSQL) ---
DATABASE_URL="postgresql://postgres:postgres@postgres:5432/postgres"
@@ -179,9 +177,9 @@ services:
extra_hosts:
- "host.docker.internal:host-gateway"
environment:
- TIMEOUT=120000
- CONCURRENT=10
- HEALTH=true
- CONCURRENT=20
- QUEUED=10
# Optional: Set a token for authentication
# - TOKEN=your-secret-token
healthcheck:
@@ -219,7 +217,17 @@ volumes:
</CodeGroup>
<Note>
**Alternative Printer Options**: If you don't want to use browserless, you can also use any headless Chrome/Chromium instance with its remote debugging port open. For example, you could run `chromium --remote-debugging-port=9222` and point `PRINTER_ENDPOINT` to that instance.
**Alternative Printer Options**: If you don't want to use browserless, you can also use a lightweight headless Chrome Docker image like `chromedp/headless-shell`:
```yaml
chrome:
image: chromedp/headless-shell:latest
restart: unless-stopped
ports:
- "9222:9222"
```
Then set `PRINTER_ENDPOINT` to `http://chrome:9222` (or `http://localhost:9222` if running outside Docker Compose). This provides the same PDF/screenshot generation functionality with a smaller image footprint.
</Note>
<Tip>
@@ -283,11 +291,20 @@ docker compose logs -f reactive-resume
</Accordion>
<Accordion title="Printer">
- **`PRINTER_ENDPOINT`**: Base URL where Reactive Resume reaches the printer service. In Compose: `http://printer:3000`.
- **`PRINTER_TOKEN`** (optional): Authentication token for the printer service. Required if your browserless instance is configured with token authentication.
- **`PRINTER_ENDPOINT`**: Base URL where Reactive Resume reaches the printer service. In Compose: `http://printer:3000`. If using browserless with token authentication, include the token as a query parameter: `ws://printer:3000?token=your-secret-token`.
<Note>
**Alternative to browserless**: You can use any headless Chrome/Chromium instance with its remote debugging port open. For example, run `chromium --remote-debugging-port=9222` and set `PRINTER_ENDPOINT` to point to that instance.
**Alternative to browserless**: You can use a lightweight headless Chrome Docker image like `chromedp/headless-shell`:
```yaml
chrome:
image: chromedp/headless-shell:latest
restart: unless-stopped
ports:
- "9222:9222"
```
Set `PRINTER_ENDPOINT` to `http://chrome:9222` (in Docker Compose) or `http://localhost:9222` (if running externally). This provides the same PDF/screenshot generation with a smaller image footprint.
</Note>
</Accordion>