Initial commit

Dockerfile

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+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y wget gnupg \
+    && wget -q https://packages.mozilla.org/apt/repo-signing-key.gpg -O- \
+      | tee /etc/apt/keyrings/packages.mozilla.org.asc > /dev/null \
+    && gpg -n -q --no-options --import --import-options import-show /etc/apt/keyrings/packages.mozilla.org.asc \
+      | awk '/pub/{getline; gsub(/^ +| +$/,""); if($0 == "35BAA0B33E9EB396F59CA838C0BA5CE6DC6315A3") print "\nThe key fingerprint matches ("$0").\n"; else print "\nVerification failed: the fingerprint ("$0") does not match the expected one.\n"}' \
+    && echo "deb [signed-by=/etc/apt/keyrings/packages.mozilla.org.asc] https://packages.mozilla.org/apt mozilla main" \
+      | tee -a /etc/apt/sources.list.d/mozilla.list > /dev/null \
+    && echo 'Package: *\nPin: origin packages.mozilla.org\nPin-Priority: 1000\n' \
+      | tee /etc/apt/preferences.d/mozilla \
+    && apt-get update && apt-get install -y \
+      apulse \
+      ca-certificates \
+      ffmpeg \
+      firefox \
+      hicolor-icon-theme \
+      libasound2 \
+      libgl1-mesa-dri \
+      libgl1-mesa-glx \
+      libpulse0 \
+      fonts-noto \
+      fonts-noto-cjk \
+      fonts-noto-color-emoji \
+      --no-install-recommends \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV LANG=C.UTF-8
+
+COPY local.conf /etc/fonts/local.conf
+
+RUN echo 'pref("browser.tabs.remote.autostart", false);' >> /usr/lib/firefox/defaults/pref/package-prefs.js
+
+COPY entrypoint.sh /usr/bin/startfirefox
+
+ENTRYPOINT [ "startfirefox" ]

README.md

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+## Requirements
+
+- [Docker Engine](https://docs.docker.com/engine/) (Docker Desktop is not required!)
+- [x11docker](https://github.com/mviereck/x11docker)
+
+## Build browser image
+
+    $ docker build -t firefox .
+
+## X server image
+
+To use the `--xc` option, we need either to pull the out-dated image,
+
+    $ docker pull x11docker/xserver
+
+or, to build a newer image locally (preferred).
+
+    $ x11docker --build x11docker/xserver
+
+## Run
+
+    $ ./x11docker -I --xc --share $HOME/Downloads -- --tmpfs /dev/shm -- firefox
+
+## References
+
+- based on [Jessie Frazelle's](https://x.com/jessfraz) [`dockerfiles/firefox`][1]
+- sourced from Mozilla's '[Install Firefox .deb package for Debian-based distributions][2]'
+
+[1]: https://github.com/jessfraz/dockerfiles/tree/cc75d30bd79d7b2fe4e2f0f37cdc880979c9eefb/firefox
+[2]: https://support.mozilla.org/en-US/kb/install-firefox-linux#w_install-firefox-deb-package-for-debian-based-distributions-recommended

entrypoint.sh

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+#!/bin/bash
+
+if [[ -e /dev/snd ]]; then
+	exec apulse firefox "$@"
+else
+	exec firefox "$@"
+fi

local.conf

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+<?xml version='1.0'?>
+<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
+<fontconfig>
+<match target="font">
+<edit mode="assign" name="rgba">
+<const>rgb</const>
+</edit>
+</match>
+<match target="font">
+<edit mode="assign" name="hinting">
+<bool>true</bool>
+</edit>
+</match>
+<match target="font">
+<edit mode="assign" name="hintstyle">
+<const>hintslight</const>
+</edit>
+</match>
+<match target="font">
+<edit mode="assign" name="antialias">
+<bool>true</bool>
+</edit>
+</match>
+<match target="font">
+<edit mode="assign" name="lcdfilter">
+<const>lcddefault</const>
+</edit>
+</match>
+<match target="font">
+<edit name="embeddedbitmap" mode="assign">
+<bool>false</bool>
+</edit>
+</match>
+</fontconfig>