README.md: Mention bubblewrap dependency

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/README.md b/README.md
index 90722a77ea9723b25db51dcfab2287e1bccc7f69..249a722ca412317e645242e82e2c668752cf8ead 100644 (file)
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ Setup
 ```
      sudo apt install build-essential cpio git curl     \
                       pkg-config libssl-dev             \
-                      node-typescript inkscape
+                      node-typescript inkscape bubblewrap
 ```
 
 2. Install Rust.  This is most easily done with [rustup](https://rustup.rs)):