Merge PR #442 - update devcontainer image

The devcontainer image stopped working
because the requested Ubuntu image
was too outdated. This pull request
brings it up to date and it should remain
functional until 2029. It also enables
use of the emulator by installing the
needed dependencies.

Reviewed-by: Matheus Afonso Martins Moreira <matheus@matheusmoreira.com>
GitHub-Pull-Request: #442

Author: matheusmoreira

.devcontainer/Dockerfile

@@ -1,6 +1,4 @@
-FROM ubuntu:22.10
-
-# TODO: install emscripten (https://emscripten.org/docs/getting_started/downloads.html)
+FROM ubuntu:24.04
 
 # TODO: Clean this up once buildkit is supported gracefully in devcontainers
 # https://github.com/microsoft/vscode-remote-release/issues/1409
@@ -27,7 +25,9 @@ RUN apt-get update \
     # ca certs need to be available for fetching git submodules
     ca-certificates \
     # python is used to convert binaries to uf2 files
-    python3 python-is-python3
+    python3 python-is-python3 \
+    # emscripten for building simulator
+    emscripten
 
 # Download and verify both x86-64 and aarch64 toolchains. This is unfortunate and
 # slows down the build, but it's a clean-ish option until buildkit can be used.
@@ -47,4 +47,4 @@ RUN /bin/sh -c 'set -ex && \
     fi'
 
 RUN rm $X86_64_TOOLCHAIN_FILENAME
-RUN rm $AARCH64_TOOLCHAIN_FILENAME
+RUN rm $AARCH64_TOOLCHAIN_FILENAME