diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3dca3d7f..69db6281 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -70,6 +70,10 @@ jobs:
       if: ${{ matrix.os == 'ubuntu' }}
       run: sudo apt-get -y install x11-utils
 
+    - name: Install Linux Windows Manager
+      if: ${{ matrix.os == 'ubuntu' }}
+      run: sudo apt-get -y install fluxbox
+
     - uses: actions/checkout@v3
 
     - name: Clojure deps cache
diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index cd4b8cac..961da943 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -8,6 +8,8 @@ A release with an intentional breaking changes is marked with:
 == Unreleased
 
 * https://github.com/clj-commons/etaoin/issues/503[#503]: Address Clojure interop issue introduced by new Thread/sleep signature in JDK 19
+* docs:
+** https://github.com/clj-commons/etaoin/issues/447[#447]: Describe testing without a display in the link:doc/01-user-guide.adoc#headless-testing[user guide], including a new requirement for a windows manager when using a virtual display on Linux
 
 == v1.0.38 [minor breaking]
 
diff --git a/Dockerfile b/Dockerfile
index 044804fc..15b0bc20 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM eclipse-temurin:8
+FROM clojure:temurin-17-tools-deps
 
 RUN apt-get -yqq update && \
     apt-get -yqq upgrade && \
@@ -9,6 +9,7 @@ RUN apt-get -yqq update && \
     apt-get -yqq install git xvfb curl unzip && \
     apt-get -yqq install fonts-ipafont-gothic xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic && \
     apt-get install -y ca-certificates jq libfontconfig libgconf-2-4 && \
+    apt-get install -y fluxbox && \
     rm -rf /var/lib/apt/lists/*
 
 # This dockerfile is not amenable to layer updates because nothing changes
diff --git a/bb.edn b/bb.edn
index 005941b1..2eb06d8d 100644
--- a/bb.edn
+++ b/bb.edn
@@ -51,6 +51,7 @@
                                "docker run -it --rm -v"
                                (str (fs/cwd) ":/etaoin")
                                "-w" "/etaoin"
+                               "--entrypoint" "/bin/bash"
                                "etaoin:latest"
                                *command-line-args*)}
   ci-release     {:doc "release tasks, use --help for args"
diff --git a/doc/01-user-guide.adoc b/doc/01-user-guide.adoc
index 75ee66de..00482202 100644
--- a/doc/01-user-guide.adoc
+++ b/doc/01-user-guide.adoc
@@ -2410,7 +2410,46 @@ Once you've got a profile path, launch a driver with the `:profile` key as follo
 (def firefox-driver (e/firefox {:profile ff-profile}))
 ----
 
-== Writing Integration Tests For Your Application
+== Writing and Running Integration Tests For Your Application
+
+=== Headless Testing [[headless-testing]]
+Is is not unusual for Continuous Integration services to have no display.
+This seems to be especially true for Linux runners.
+
+When running your tests on Linux with no display, you have 2 choices:
+
+* run the WebDriver in <<headless,headless>> mode
+* use a virtual display
+
+NOTE: Things being what they are, WebDrivers can behave differently when run headless.
+
+The technologies we use for Etaoin's CI testing on GitHub Actions for Linux are:
+
+* Xvfb - acts as an X virtual display
+* fluxbox - a lightweight windows manager (needed by geckodriver/Firefox to support window positioning operations)
+
+You can see how we make use of these tools in the Etaoin link:/script/test.clj[test script], but in a nutshell:
+
+To install:
+[source,shell]
+----
+sudo apt get install -y xvfb fluxbox
+----
+
+TIP: As of this writing Xvfb is pre-installed on the linux runner on GitHub Actions, but fluxbox is not.
+
+Ensure `DISPLAY` env var is set:
+[source,shell]
+----
+export DISPLAY=:99.0
+----
+
+Launch the virtual display and fluxbox:
+[source,shell]
+----
+Xvfb :99 -screen 0 1024x768x24 &
+fluxbox -display :99 &
+----
 
 === Basic Fixture
 
diff --git a/script/test.clj b/script/test.clj
index 4437197e..86f9278e 100644
--- a/script/test.clj
+++ b/script/test.clj
@@ -63,6 +63,12 @@
               (Thread/sleep 500)
               (recur))))))))
 
+(defn- launch-fluxbox []
+  (if (fs/which "fluxbox")
+    (process/process "fluxbox -display :99" {:out (fs/file "/dev/null")
+                                             :err (fs/file "/dev/null")})
+    (status/die 1 "fluxbox not found")))
+
 (defn- running-in-docker? []
   (fs/exists? "/.dockerenv"))
 
@@ -148,7 +154,8 @@ Notes:
               test-cmd-args (concat cp-args test-runner-args)]
           (when virtual-display?
             (status/line :head "Launching virtual display")
-            (launch-xvfb))
+            (launch-xvfb)
+            (launch-fluxbox))
           (status/line :head "Running %s tests on %s%s"
                        test-id
                        platform