diff --git a/docker/archlinux/README.md b/docker/archlinux/README.md
new file mode 100644
index 000000000..67bf501e5
--- /dev/null
+++ b/docker/archlinux/README.md
@@ -0,0 +1,28 @@
+# Notes to install latest gcc and arm-none-eabi-gcc
+
+```
+cat << EOF |sudo tee -a /etc/pacman.conf
+
+[testing]
+Include = /etc/pacman.d/mirrorlist
+
+[community-testing]
+Include = /etc/pacman.d/mirrorlist
+
+[staging]
+Include = /etc/pacman.d/mirrorlist
+EOF
+
+sudo pacman -Sy
+
+# serch available versions
+pacman -Ss '^arm-none-eabi-gcc$'
+pacman -Ss '^gcc$'
+
+# depending on where the latest bleeding edge is:
+sudo pacman -S community-testing/arm-none-eabi-gcc
+sudo pacman -S arm-none-eabi-gcc
+sudo pacman -S staging/gcc
+sudo pacman -S testing/gcc
+sudo pacman -S gcc
+```