Update Dockerfile and cloudbuild.yaml to use smaller container

PiperOrigin-RevId: 647760019

Dockerfile

@@ -25,16 +25,6 @@ ARG BAZEL_VERSION="7.2.1"
 ADD https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-installer-linux-x86_64.sh /tmp/install_bazel.sh
 RUN /bin/bash /tmp/install_bazel.sh && rm /tmp/install_bazel.sh
 
-# https://bazel.build/run/build#running-bazel-airgapped
-RUN mkdir -p /bazel-distdir && \
-    mkdir -p /tmp/empty_workspace && \
-    cd /tmp/empty_workspace && \
-    touch WORKSPACE && \
-    bazel fetch --repository_cache=/bazel-distdir && \
-    cd / && \
-    rm -rf /tmp/* && \
-    rm -rf /root/.cache/bazel
-
 RUN mkdir -p /workspace
 RUN mkdir -p /bazel
 

cloudbuild.yaml

@@ -1,5 +1,5 @@
 steps:
-- name: 'gcr.io/cel-analysis/gcc-9@sha256:6f2f565b870373a3d33affa3e56748fd296a7322cd421a0b2c0b6c414b6dab5a'
+- name: 'gcr.io/cel-analysis/gcc-9@sha256:5c08ae90e33a33010c8e518173a926143ba029affb54ceec288f375f474ea87f'
   args:
   - '--output_base=/bazel' # This is mandatory to avoid steps accidently sharing data.
   - 'test'
@@ -14,7 +14,7 @@ steps:
   - '--local_ram_resources=HOST_RAM*.4'
   id: gcc-9
   waitFor: ['-']
-- name: 'gcr.io/cel-analysis/gcc-9@sha256:6f2f565b870373a3d33affa3e56748fd296a7322cd421a0b2c0b6c414b6dab5a'
+- name: 'gcr.io/cel-analysis/gcc-9@sha256:5c08ae90e33a33010c8e518173a926143ba029affb54ceec288f375f474ea87f'
   env:
   - 'CC=clang-11'
   - 'CXX=clang++-11'