When launching containerized Chromium, use Tailscale with TS_AUTHKEY#69
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When launching containerized Chromium, use Tailscale with TS_AUTHKEY#69
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If CDP_URL is not given, then try to launch a containerized Chromium (using chromium-live image). However, if TS_AUTHKEY is supplied, there is no need to launch that containerized Chromium with host networking. Instead, use it to install and setup Tailscale (with that given TS_AUTHKEY). To try, find that auth key for devices in Tailscale admin and then: ```bash TS_AUTHKEY=yourkey uv run middleman.py ``` After a while, the tailnet IP address of the launched container will be shown: ``` ✘ No existing CDP found ⇢ Launching local Chromium container with Tailscale... ✓ Container started: name=chromium-n9vap id=f89421629271 ⇢ Setting up Tailscale in container f89421629271eee ⇢ Executing Tailscale setup: Step 1/4 ⇢ Executing Tailscale setup: Step 2/4 ⇢ Executing Tailscale setup: Step 3/4 ⇢ Executing Tailscale setup: Step 4/4 ✓ All Tailscale setup steps completed successfully ✓ Tailscale IP address: 100.84.70.110 ✓ Set CDP_URL to http://100.84.70.110:9222 ⇢ Checking CDP availability... ⇢ Checking for remote Chrome with CDP at http://100.84.70.110:9222... ✓ CDP is detected. ✓ Local Chromium CDP is ready Listening on port 3000 INFO: Started server process [595678] INFO: Waiting for application startup. INFO: Application startup complete. INFO: Uvicorn running on http://0.0.0.0:3000 (Press CTRL+C to quit) ``` Use a web browser to see the live view, in this example it will be at 100.84.70.110:3001. This is the remote containerized Chromium dynamically launched by Middleman during its initial bootstrap. While watching the above live view, open Middleman example page as usual at localhost:3000 and click on the NPR example. The live view should show Chromium navigating to the NPR website for the headlines extraction.
bin-ario
approved these changes
Dec 18, 2025
middleman.py
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| if os.getenv("TS_AUTHKEY"): | ||
| if asyncio.run(launch_tailscaled_chromium()) is False: | ||
| print("Fatal error: Unable to detect or launch Chromium with Tailscale!") | ||
| # sys.exit(-1) |
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Good point, I think it's better to remove it. Without a working containerized Chromium, Middleman will not effectivly work (i.e. unable to distill pages) but having it running means someone can drop in and perform some troubleshooting.
| cmd = [ | ||
| "run", | ||
| "-d", | ||
| "--rm", |
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so we want to rm the container right away?
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Middleman does not have any code that stop or kill the container anyway.
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If CDP_URL is not given, then try to launch a containerized Chromium (using chromium-live image).
However, if TS_AUTHKEY is supplied, there is no need to launch that containerized Chromium with host networking. Instead, use it to install and setup Tailscale (with that given TS_AUTHKEY).
To try, find that auth key for devices in Tailscale admin and then:
After a while, the tailnet IP address of the launched container will be shown:
Use a web browser to see the live view, in this example it will be at 100.84.70.110:3001. This is the remote containerized Chromium dynamically launched by Middleman during its initial bootstrap.
While watching the above live view, open Middleman example page as usual at localhost:3000 and click on the NPR example. The live view should show Chromium navigating to the NPR website for the headlines extraction.