diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3d5f98..2f3d60e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 |Version|Date|Notes|
 |---|---|---|
+|   |2021-02-07|Add MAC_ADDRESS environment variable.|
+|   |2021-02-03|Employ wget --no-verbose to avoid buffer overload in hub.docker.com.|
+|   |2021-02-03|Reduce build size.|
+|   |2021-01-27|Add OSX_COMMANDS to allow runtime commands on :auto image.|
+|   |2021-01-26|Removed most pointless VOLUME build commands.|
 |3.0|2021-01-23|Add fast mode boot straight to shell. And -v $PWD/disk.img:/image for all Dockerfiles|
 |   |2021-01-22|Add additional helm chart instructions and files.|
 |   |2021-01-15|Fix helm initial disk creation process and add installation instructions.|
diff --git a/Dockerfile b/Dockerfile
index 5eff72a..428ab5f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,6 +43,7 @@
 #       -e CORES=4
 #       -e EXTRA=
 #       -e INTERNAL_SSH_PORT=10022
+#       -e MAC_ADDRESS=
 #
 # Extra QEMU args:
 #
@@ -177,7 +178,7 @@ RUN touch Launch.sh \
     && tee -a Launch.sh <<< '-drive id=InstallMedia,if=none,file=/home/arch/OSX-KVM/BaseSystem.img,format=qcow2 \' \
     && tee -a Launch.sh <<< '-drive id=MacHDD,if=none,file=${IMAGE_PATH:-/home/arch/OSX-KVM/mac_hdd_ng.img},format=qcow2 \' \
     && tee -a Launch.sh <<< '-device ide-hd,bus=sata.4,drive=MacHDD \' \
-    && tee -a Launch.sh <<< '-netdev user,id=net0,hostfwd=tcp::${INTERNAL_SSH_PORT:-10022}-:22,hostfwd=tcp::${SCREEN_SHARE_PORT:-5900}-:5900, -device e1000-82545em,netdev=net0,id=net0,mac=52:54:00:09:49:17 \' \
+    && tee -a Launch.sh <<< '-netdev user,id=net0,hostfwd=tcp::${INTERNAL_SSH_PORT:-10022}-:22,hostfwd=tcp::${SCREEN_SHARE_PORT:-5900}-:5900, -device e1000-82545em,netdev=net0,id=net0,mac=${MAC_ADDRESS:-52:54:00:09:49:17} \' \
     && tee -a Launch.sh <<< '-monitor stdio \' \
     && tee -a Launch.sh <<< '-vga vmware \' \
     && tee -a Launch.sh <<< '${EXTRA:-}'
@@ -187,12 +188,12 @@ RUN grep -v InstallMedia ./Launch.sh > ./Launch-nopicker.sh \
     && chmod +x ./Launch-nopicker.sh \
     && sed -i -e s/OpenCore\.qcow2/OpenCore\-nopicker\.qcow2/ ./Launch-nopicker.sh
 
+USER arch
+
 ENV USER arch
 
 ENV DISPLAY=:0.0
 
-USER arch
-
 ENV IMAGE_PATH=/home/arch/OSX-KVM/mac_hdd_ng.img
 
 VOLUME ["/tmp/.X11-unix"]
diff --git a/README.md b/README.md
index 49a5ba0..8134bbd 100644
--- a/README.md
+++ b/README.md
@@ -66,8 +66,25 @@ docker run -it \
 
 # Wait 2-3 minutes until you drop into the shell.
 ```
+
+```bash
+
+docker pull sickcodes/docker-osx:auto
+
+# boot to OSX shell + display (19GB)
+docker run -it \
+    --device /dev/kvm \
+    -p 50922:10022 \
+    -v /tmp/.X11-unix:/tmp/.X11-unix \
+    -e "DISPLAY=${DISPLAY:-:0.0}" \
+    sickcodes/docker-osx:auto
+
+```
+
 ```bash
 
+docker pull sickcodes/docker-osx:auto
+
 # boot to OSX shell + display (19GB) + commands to run inside OSX
 docker run -it \
     --device /dev/kvm \
@@ -581,12 +598,18 @@ docker build -t docker-osx:latest \
 Pass any devices/directories to the Docker container & the QEMU arguments using the handy `-e EXTRA=` runtime options.
 
 ```bash
+# example customizations
 docker run \
     -e RAM=4 \
     -e SMP=4 \
     -e CORES=4 \
     -e EXTRA='-usb -device usb-host,hostbus=1,hostaddr=8' \
     -e INTERNAL_SSH_PORT=23 \
+    -e MAC_ADDRESS="$(xxd -c1 -p -l 6 /dev/urandom | tr '\n' ':' | cut -c1-17)" \
+    -e AUDIO_DRIVER=alsa \
+    -e IMAGE_PATH=/image \
+    -e SCREEN_SHARE_PORT=5900 \
+    -e DISPLAY=:0 \
     --device /dev/kvm \
     --device /dev/snd \
     -v /tmp/.X11-unix:/tmp/.X11-unix \