fix: Install Rust toolchain explicitly in graph-toolbox Dockerfile (#287)

This change ensures the Rust toolchain is installed after dependencies but before running npm,
addressing the issue where rustup no longer automatically installs the active toolchain.
The fix uses 'rustup target add' and 'rustup toolchain install' to explicitly install
the required toolchain for the target architecture.

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

dockerfiles/graph-toolbox/Dockerfile

@@ -26,6 +26,9 @@ RUN apt-get -q update \
     libpq-dev \
     ca-certificates
 
+# Ensure the Rust toolchain is installed for the target architecture
+RUN rustup target add ${TARGET} && rustup toolchain install stable-${TARGET}
+
 RUN mkdir /src
 
 WORKDIR /src
@@ -73,6 +76,9 @@ RUN mkdir -p /etc/apt/keyrings && \
     apt-get update && \
     apt-get install nodejs -y
 
+# Ensure the Rust toolchain is installed for the target architecture
+RUN rustup target add ${TARGET} && rustup toolchain install stable-${TARGET}
+
 RUN npm install --global yarn && \
     yarn global add nan @graphprotocol/graph-cli@${GRAPH_CLI_VERSION} @graphprotocol/indexer-cli@${INDEXER_CLI_VERSION}