message: Add comment about `SMITHY_RS_DOCKER_BUILD_IMAGE`
diff: @@ -142,9 +142,12 @@ ENV PATH=/opt/cargo/bin:/opt/nodejs/bin:$PATH \
  CARGO_INCREMENTAL=0 \
  RUSTDOCFLAGS="-D warnings" \
  RUSTFLAGS="-D warnings" \
  - SMITHY_RS_DOCKER_BUILD_IMAGE=1 \
  LANG=en_US.UTF-8 \
  LC_ALL=en_US.UTF-8
  +# SMITHY_RS_DOCKER_BUILD_IMAGE indicates to build scripts that they are being built inside of the Docker build image.
  +# This is used primarily by the `build.gradle.kts` files in choosing how to execute build tools. If inside the image,
  +# they will assume the tools are on the PATH, but if outside of the image, they will `cargo run` the tools.
  +ENV SMITHY_RS_DOCKER_BUILD_IMAGE=1
  RUN npm install -g diff2html-cli@5.1.11
  WORKDIR /home/build
  COPY ci-build/scripts/sanity-test /home/build/sanity-test
  