Build PR builds in CodeBuild

This commit updates CodeCommit spec to build the CI builds in CodeCommit
instead of CodeDeploy.

Signed-off-by: Mark Kirichenko <[email protected]>

Author: atanzu

appspec.yml

@@ -10,7 +10,8 @@ phases:
   build:
     commands:
       - echo Build started on `date`
-      - env | grep CODEBUILD > build_env.txt
+      - env | grep CODEBUILD > $CODEBUILD_SRC_DIR/build_env.txt
+      - $CODEBUILD_SRC_DIR/ci_entrypoint.sh
   post_build:
     commands:
       - echo Build completed on `date`

buildspec.yml

@@ -27,7 +27,6 @@ function status_update() {
 # where a CI run will eventually fail due to no space left.
 # We also clear the system caches in order to guarantee the maximum possible available memory.
 docker system prune --force
-echo 3 > /proc/sys/vm/drop_caches
 
 pwd
 source build_env.txt