Update rust regularly

Closes #4

Author: jeroen

.github/workflows/build.yml

@@ -5,6 +5,8 @@ on:
     branches: [master]
   workflow_dispatch:
     branches: [master]
+  schedule:
+    - cron: "0 2 * * *"
 
 jobs:
   build:

Dockerfile

@@ -15,8 +15,6 @@ FROM ghcr.io/r-wasm/webr:main
 # Alternative workaround for libnode-dev conflicting with nodejs (see above)
 RUN apt-get update && \
 	apt-get install -y equivs lsb-release
-
-
 #	equivs-control libnode-dev && \
 #	sed -i 's/Package:.*/Package: libnode-dev/' libnode-dev && \
 #	sed -i 's/# Provides:.*/Provides: libv8-dev/' libnode-dev && \
@@ -26,6 +24,9 @@ RUN apt-get update && \
 #	dpkg -i libnode-dev_99.0_all.deb && \
 #	rm -Rf libnode*
 
+# Update outdated rust from the parent container
+rustup update stable nightly
+
 # Install some common runtime libs
 RUN CRANLIBS=$(curl https://r-universe.dev/stats/sysdeps/noble | jq --slurp -r '.[].packages | flatten[]' | grep -v "libnode") &&\
 	apt-get install -y --no-install-recommends zstd xvfb $CRANLIBS && \