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 && \
@@ -42,6 +40,9 @@ ENV R_LIBS_USER=/opt/R/current/lib/R/site-library
 COPY Renviron /opt/R/current/lib/R/etc/Renviron.site
 COPY Rprofile /opt/R/current/lib/R/etc/Rprofile.site
 
+# Update emscripten rust from the parent container
+RUN rustup update stable
+
 # Use devel-pak (until solver hangs are fixed)
 RUN R -e 'install.packages("pak", lib = .Library, repos = "https://r-lib.github.io/p/pak/devel/source/linux-gnu/x86_64")'
 

entrypoint.sh

@@ -10,6 +10,13 @@ echo "Running fake X server on $DISPLAY"
 SOURCEPKG="${1:-$SOURCEPKG}"
 GITHUB_OUTPUT=${GITHUB_OUTPUT:-/dev/stdout}
 
+# Make sure we have laste rust
+if [ "$NEED_CARGO" ]; then
+  echo "::group::Update Rust"
+  rustup update stable nightly
+  echo "::endgroup::"
+fi
+
 # Use package cache dir
 export R_LIBS_USER="${PWD}/pkglib"