caperneoignis / chrome-headless-browser-docker

Continuously building Chrome Docker image for Linux.

special thanks to

justinribeiro I used his MakeFile with the test script I had acquired from the forked repo that post the version informaiton.

chrome-headless-browser-docker

This repository contains one docker builds.

Chrome Headless Browser

This docker image contain the Linux Dev channel Chromium (https://www.chromium.org/getting-involved/dev-channel), with the required dependencies and the command line argument running headless mode provided.

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Variables that can be set at run time

Variable	Default
RMT_DBG_ADDR	0.0.0.0
RMT_DBG_PORT	9222
RMT_DBG_WIN_SIZE	"1920,1080"

These variables can be set with the -e switch at run time, so you can get different settings for the chrome browser at run time.

How to run the container:

To run the container with remote-debugging:

docker run -d -p 9222:9222 --cap-add=SYS_ADMIN caperneoignis/chrome-headless-browser

To run the container with remote-debugging and different setting when using with latest vs latest_apache tag:

docker run -d -p 9222:9222 --cap-add=SYS_ADMIN caperneoignis/chrome-headless-browser:latest --no-sandbox --disable-gpu --dump-dom https://google.com

docker run -d -p 9223:9223 -e RMT_DBG_PORT=9223 --cap-add=SYS_ADMIN caperneoignis/chrome-headless-browser:latest_apache

See the following sections for alternate ways to start the container.

Why cap-add=SYS_ADMIN is needed

Currently, there is a user namespace issue in OSX that generates this error:

Failed to move to new namespace: PID namespaces supported, Network namespace supported,
but failed: errno = Operation not permitted

There are two mitigations, but none of them are ideal as it gives the container some special capabilities:

1. Use a special seccomp profile, as stated in https://twitter.com/jessfraz/status/681934414687801345

docker run -d --name chrome -p 9222:9222 --security-opt seccomp:/path/to/chrome.json caperneoignis/chrome-headless-browser

2. Use CAP_SYS_ADMIN

docker run -d --name chrome -p 9222:9222 --cap-add=SYS_ADMIN caperneoignis/chrome-headless-browser