Add cbindgen to android build container

android/docker/Dockerfile

@@ -111,4 +111,11 @@ RUN patch -p1 -f -N -r- -d /usr/local/go < /tmp/goruntime-boottime-over-monotoni
 # Add rust targets
 RUN rustup target add x86_64-linux-android i686-linux-android aarch64-linux-android armv7-linux-androideabi
 
+# Install cbindgen to address maybenot.h (checked in) sometimes needing to be
+# re-generated due to how `make` looks at last-modifications while git neither
+# stores nor consistently sets modification metadata on file checkout.
+# This is an intermediate solution that will be further improved as part of
+# issue: DROID-1328.
+RUN cargo install --force cbindgen --version "0.26.0" && rm -rf ~/.cargo/registry
+
 WORKDIR /build