[#61287] WIP: etc: DockerHelper.sh: Build with registry cache

Adds an option to use remote GitHub registry cache.

Signed-off-by: Illia Vysochyn <[email protected]>

etc/DockerHelper.sh

@@ -26,6 +26,7 @@ usage: $0 [CMD] [OPTIONS]
   -threads                      Max number of threads to use if compiling.
   -sha                          Use git commit sha as the tag image. Default is
                                   'latest'.
+  -cache                        Use remote registry cache when building the image.
   -h -help                      Show this message and exits
 
 EOF
@@ -60,12 +61,20 @@ _setup() {
             fromImage="${FROM_IMAGE_OVERRIDE:-"${org}/flow-${os}-dev"}:${imageTag}"
             context="."
             buildArgs="--build-arg numThreads=${numThreads}"
+            cacheArgs=""
+            if [[ "${useCache}" == "yes" ]]; then
+                cacheArgs="--cache-from type=registry,ref=ghcr.io/antmicro/openroad-flow-scripts-test-cache/${os}"
+            fi
             ;;
         "dev" )
             fromImage="${FROM_IMAGE_OVERRIDE:-$osBaseImage}"
             cp tools/OpenROAD/etc/DependencyInstaller.sh etc/InstallerOpenROAD.sh
             context="etc"
             buildArgs=""
+            cacheArgs=""
+            if [[ "${useCache}" == "yes" ]]; then
+                cacheArgs="--cache-from type=registry,ref=ghcr.io/antmicro/openroad-flow-scripts-test-cache-deps/${os}"
+            fi
             ;;
         *)
             echo "Target ${target} not found" >&2
@@ -79,7 +88,11 @@ _setup() {
 
 _create() {
     echo "Create docker image ${imagePath} using ${file}"
-    docker build --file "${file}" --tag "${imagePath}" ${buildArgs} "${context}"
+    if docker buildx version > /dev/null 2>&1; then
+        docker buildx build --load=true --file "${file}" ${cacheArgs} --tag "${imagePath}" ${buildArgs} "${context}"
+    else
+        docker build --file "${file}" ${cacheArgs} --tag "${imagePath}" ${buildArgs} "${context}"
+    fi
     rm -f etc/InstallerOpenROAD.sh
 }
 
@@ -143,6 +156,7 @@ fi
 os="centos7"
 target="dev"
 useCommitSha="no"
+useCache="no"
 numThreads="-1"
 
 while [ "$#" -gt 0 ]; do
@@ -166,6 +180,9 @@ while [ "$#" -gt 0 ]; do
             echo "${1} requires an argument" >&2
             _help
             ;;
+        -cache )
+            useCache=yes
+            ;;
         *)
             echo "unknown option: ${1}" >&2
             _help