feat: add foundry installation to zk-environment Dockerfile (matter-l…

…abs#1995)

## What ❔

- Adds foundry installation to zk-environment Dockerfile

## Why ❔

- This is necessary for adding CI to zk_toolbox

<!-- Why are these changes done? What goal do they contribute to? What
are the principles behind them? -->
<!-- Example: PR templates ensure PR reviewers, observers, and future
iterators are in context about the evolution of repos. -->

## Checklist

<!-- Check your PR fulfills the following items. -->
<!-- For draft PRs check the boxes as you complete them. -->

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [x] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zk fmt` and `zk lint`.
- [x] Spellcheck has been run via `zk spellcheck`.

docker/zk-environment/Dockerfile

@@ -125,6 +125,10 @@ RUN wget -c https://sourceware.org/pub/valgrind/valgrind-3.20.0.tar.bz2 && \
     cd valgrind-3.20.0 && ./configure && make && make install && \
     cd ../ && rm -rf valgrind-3.20.0.tar.bz2 && rm -rf valgrind-3.20.0
 
+# Install foundry
+RUN cargo install --git https://github.com/foundry-rs/foundry \
+    --profile local --locked forge cast
+
 # Setup the environment
 ENV ZKSYNC_HOME=/usr/src/zksync
 ENV PATH="${ZKSYNC_HOME}/bin:${PATH}"