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When launching containerized Chromium, use Tailscale with TS_AUTHKEY #69

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Merged
ariya merged 2 commits into from
Dec 18, 2025
Merged

When launching containerized Chromium, use Tailscale with TS_AUTHKEY #69

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When launching containerized Chromium, use Tailscale with TS_AUTHKEY
ariya Dec 17, 2025
b3909a6
do not exit
ariya Dec 18, 2025
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2 changes: 2 additions & 0 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,8 @@ COPY --from=ghcr.io/astral-sh/uv:0.8.4 /uv /uvx /bin/
RUN apt-get update -y && apt-get install -y --no-install-recommends \
curl \
ca-certificates \
sudo \
podman \
chromium \
tigervnc-standalone-server \
libnss3 \
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105 changes: 102 additions & 3 deletions middleman.py
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Expand Up @@ -973,11 +973,106 @@ async def check_cdp() -> bool:
return False


def run_podman(args: list) -> subprocess.CompletedProcess:
cmd = ["podman"]
if os.environ.get("CONTAINER_HOST"):
cmd.append("--remote")
cmd.extend(args)
return subprocess.run(cmd, capture_output=True, text=True, check=True, encoding="utf-8", errors="replace")


async def setup_tailscale(container_id, name) -> str | None:
try:
print(f"{ARROW} Setting up Tailscale in container {container_id}...")

TAILSCALE_IP_CMD = "sudo tailscale ip"
tailscale_commands = [
"curl -fsSL https://tailscale.com/install.sh | sudo sh",
"sudo nohup tailscaled > /dev/null 2>&1 &",
f"sudo tailscale up --auth-key={os.getenv('TS_AUTHKEY')} --hostname={name}",
TAILSCALE_IP_CMD,
]

ip_address = None
for i, cmd in enumerate(tailscale_commands, 1):
print(f"{ARROW} Executing Tailscale setup: Step {i}/{len(tailscale_commands)}")
await asyncio.sleep(1)
result = run_podman(["exec", container_id, "sh", "-c", cmd])
if result.returncode == 0:
if cmd == TAILSCALE_IP_CMD and result.stdout:
ip_address = result.stdout.strip().split("\n")[0]
else:
print(f"{CROSS} Failed to execute Tailscale setup step {i}: {result.stderr}")
return None

if ip_address:
print(f"{CHECK} All Tailscale setup steps completed successfully")
print(f"{CHECK} Tailscale IP address: {ip_address}")
return ip_address
else:
print(f"{CROSS} Failed to get IP address from Tailscale")
return None

except Exception as e:
print(f"{CROSS} Error setting up Tailscale: {e}")
return None


async def launch_tailscaled_chromium() -> bool:
global CDP_URL
try:
print(f"{ARROW} Launching local Chromium container with Tailscale...")
name = f"chromium-{nanoid.generate(FRIENDLY_CHARS, 5)}"
cmd = [
"run",
"-d",
"--rm",
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@bin-ario bin-ario Dec 18, 2025

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so we want to rm the container right away?

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@ariya ariya Dec 18, 2025

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Middleman does not have any code that stop or kill the container anyway.

"--name",
name,
"--cap-add=NET_ADMIN",
"--cap-add=NET_RAW",
"--device",
"/dev/net/tun:/dev/net/tun",
"ghcr.io/remotebrowser/chromium-live",
]
result = run_podman(cmd)
container_id = result.stdout.strip()
print(f"{CHECK} Container started: name={name} id={container_id}")

await asyncio.sleep(3)
ip_address = await setup_tailscale(container_id, name)
if ip_address is None:
return False

CDP_URL = f"http://{ip_address}:9222"
print(f"{CHECK} Set CDP_URL to {CDP_URL}")
print(f"{ARROW} Checking CDP availability...")
await asyncio.sleep(3)
for attempt in range(10):
if await check_cdp():
print(f"{CHECK} Local Chromium CDP is ready")
return True

if attempt == 9:
print(f"{CROSS} Failed to connect to CDP after container launch")
return False

await asyncio.sleep(2)

return False

except subprocess.CalledProcessError as e:
print(f"{CROSS} Failed to launch container: {e}")
return False
except Exception as e:
print(f"{CROSS} Error launching Chromium: {e}")
return False


async def launch_local_chromium() -> bool:
try:
print(f"{ARROW} Launching local Chromium container...")
cmd = [
"podman",
"run",
"-d",
"--rm",
Expand All @@ -989,7 +1084,7 @@ async def launch_local_chromium() -> bool:
"ghcr.io/remotebrowser/chromium-live",
]

result = subprocess.run(cmd, capture_output=True, text=True, check=True)
result = run_podman(cmd)
container_id = result.stdout.strip()
print(f"{CHECK} Container started: {container_id}")

Expand Down Expand Up @@ -1019,7 +1114,11 @@ async def launch_local_chromium() -> bool:
if __name__ == "__main__":
if asyncio.run(check_cdp()) is False:
print(f"{CROSS} No existing CDP found")
if asyncio.run(launch_local_chromium()) is False:
if os.getenv("TS_AUTHKEY"):
if asyncio.run(launch_tailscaled_chromium()) is False:
print("Fatal error: Unable to detect or launch Chromium with Tailscale!")
print("Middleman will not work properly.")
elif asyncio.run(launch_local_chromium()) is False:
print("Fatal error: Unable to launch containerized Chromium!")
sys.exit(-1)

Expand Down