PMM-12899 use a dedicated folder for yarn cache

Author: ademidoff

build/local/build.sh

@@ -41,6 +41,7 @@ echo $fb_commit_sha > fbCommitSha
 # Create cache directories. 
 test -d "${root_dir}/go-path" || mkdir -p "go-path"
 test -d "${root_dir}/go-build" || mkdir -p "go-build"
+test -d "${root_dir}/yarn-cache" || mkdir -p "yarn-cache"
 
 PATH_TO_SCRIPTS="sources/pmm/src/github.com/percona/pmm/build/scripts"
 export RPMBUILD_DOCKER_IMAGE=perconalab/rpmbuild:3

build/scripts/build-server-rpm

@@ -112,6 +112,9 @@ build() {
     if [ -d "${root_dir}/go-build" ]; then
         volume_mounts+=" -v ${root_dir}/go-build:/home/builder/.cache/go-build"
     fi
+    if [ -d "${root_dir}/yarn-cache" ]; then
+        volume_mounts+=" -v ${root_dir}/yarn-cache:/home/builder/.yarn"
+    fi
     if [ -d "${root_dir}/go-path" ]; then
         volume_mounts+=" -v ${root_dir}/go-path:/home/builder/go/pkg/mod"
     fi