Specify clang/llvm package installation requirements in docker files

LiteRT-PiperOrigin-RevId: 815812840

Author: MatthiasKreileder

ci/tflite-android.Dockerfile

@@ -4,7 +4,7 @@ ENV ANDROID_DEV_HOME /android
 RUN mkdir -p ${ANDROID_DEV_HOME}
 
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends default-jdk
+    apt-get install -y --no-install-recommends default-jdk llvm-18 clang-18
 
 # Install Android SDK.
 ENV ANDROID_SDK_FILENAME commandlinetools-linux-13114758_latest.zip

ci/tflite-py3.Dockerfile

@@ -1,2 +1,2 @@
 FROM us-docker.pkg.dev/ml-oss-artifacts-published/ml-public-container/ml-build:latest
-RUN apt-get update && apt-get install -y --no-install-recommends libc++-18-dev libc++abi-18-dev
+RUN apt-get update && apt-get install -y --no-install-recommends libc++-18-dev libc++abi-18-dev llvm-18 clang-18

docker_build/hermetic_build.Dockerfile

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # Docker image to provide a hermetic build environment for Litert.
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 # Avoid interactive prompts during package installation
 ENV DEBIAN_FRONTEND=noninteractive
@@ -30,8 +30,8 @@ RUN apt-get update && apt-get install -y \
     unzip \
     wget \
     zip \
-    llvm-14 \
-    clang-14 \
+    llvm-18 \
+    clang-18 \
     libc++-dev \
     libc++abi-dev \
     && apt-get clean && \