diff --git a/Dockerfile b/Dockerfile
index f5c286f..0e60e60 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,5 @@
 FROM debian
 
-# TODO(hkjn): Use alpine as base.
-
 MAINTAINER Henrik Jonsson <me@hkjn.me>
 
 ENV TOR_VERSION=7.0a1-hardened
@@ -45,5 +43,6 @@ RUN curl --fail -O -sSL ${RELEASE_URL} && \
 WORKDIR /usr/local/bin/Browser/Downloads
 USER user
 
-ENTRYPOINT ["start-tor-browser"]
+COPY ["start", "/usr/local/bin/"]
+ENTRYPOINT ["start"]
 CMD [""]
diff --git a/README.md b/README.md
index 4411b3e..95871d0 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,22 @@
 # tor-browser
 
-[![](https://badge.imagelayers.io/hkjn/tor-browser:latest.svg)](https://imagelayers.io/?images=hkjn/tor-browser:latest 'Get your own badge on imagelayers.io')
+This repo defines the `hkjn/tor-browser` Docker image.
 
-This repo defines the `hkjn/tor-browser` Docker image.
\ No newline at end of file
+You can run tor-browser in a container with a command like:
+
+```
+docker run -it --rm --name tor-browser \
+           -v /tmp/.X11-unix:/tmp/.X11-unix:ro \
+           -e DISPLAY=unix$DISPLAY \
+           hkjn/tor-browser
+```
+
+If you want to specify a custom `torrc` file, that can be done with:
+```
+docker run -it --rm --name tor-browser \
+           -v /host/dir/containing/torrc:/conf \
+           -e TORRC_PATH=/conf/torrc \
+           -v /tmp/.X11-unix:/tmp/.X11-unix:ro \
+           -e DISPLAY=unix$DISPLAY \
+           hkjn/tor-browser
+```
\ No newline at end of file
diff --git a/start b/start
new file mode 100755
index 0000000..a96a0c7
--- /dev/null
+++ b/start
@@ -0,0 +1,14 @@
+#!/bin/bash
+#
+# Entrypoint script for tor-browser.
+#
+set -euo pipefail
+
+TORRC_PATH=${TORRC_PATH:-""}
+[[ "$TORRC_PATH" ]] && echo "$(date) [ $(basename $0) ] Using torrc file from '$TORRC_PATH'.."
+[[ -e "$TORRC_PATH" ]] {
+  echo "$(date) [ $(basename $0) ] FATAL: No such file '$TORRC_PATH'." >&1
+  exit 1
+}
+cp -v "$TORRC_PATH" /usr/local/bin/Browser/TorBrowser/Data/Tor/torrc
+start-tor-browser "$@"