ubuntu bionic, share x11 socket, firefox

(requires `xhost +` or other form of authorization)

Dockerfile

@@ -0,0 +1,8 @@
+FROM ubuntu:18.04
+
+RUN apt-get update \
+    && apt-get install --yes --no-install-recommends firefox
+
+RUN useradd --create-home fox
+USER fox
+CMD ["firefox"]

docker-compose.yml

@@ -0,0 +1,13 @@
+version: '2'
+
+services:
+  browser:
+    build: .
+    image: fphammerle/firefox-x11
+    environment:
+    - DISPLAY
+    volumes:
+    - /tmp/.X11-unix:/tmp/.X11-unix
+    security_opt: [no-new-privileges]
+
+# https://docs.docker.com/compose/compose-file/compose-file-v2/