diff --git a/build-automation.mjs b/build-automation.mjs
index 9a085826b..ba296d1ed 100644
--- a/build-automation.mjs
+++ b/build-automation.mjs
@@ -87,13 +87,13 @@ export default async function(github) {
   } else {
     const newVersions = await checkForMuslVersionsAndSecurityReleases(github, versions);
     let updatedVersions = [];
-    for (let version of Object.keys(newVersions)) {
-      if (newVersions[version].muslBuildExists) {
-        const { stdout } = await exec(`./update.sh ${newVersions[version].isSecurityRelease ? "-s " : ""}${version}`);
+    for (const [version, newVersion] of Object.entries(newVersions)) {
+      if (newVersion.muslBuildExists) {
+        const { stdout } = await exec(`./update.sh ${newVersion.isSecurityRelease ? "-s " : ""}${version}`);
         console.log(stdout);
-        updatedVersions.push(newVersions[version].fullVersion);
+        updatedVersions.push(newVersion.fullVersion);
       } else {
-        console.log(`There's no musl build for version ${newVersions[version].fullVersion} yet.`);
+        console.log(`There's no musl build for version ${newVersion.fullVersion} yet.`);
         process.exit(0);
       }
     }
diff --git a/functions.sh b/functions.sh
index bee3dafe0..7c927cc08 100755
--- a/functions.sh
+++ b/functions.sh
@@ -136,13 +136,18 @@ function get_config() {
 # Get available versions for a given path
 #
 # The result is a list of valid versions.
+# shellcheck disable=SC2120
 function get_versions() {
+  shift
+
   local versions=()
-  local dirs=()
+  local dirs=("$@")
 
   local default_variant
   default_variant=$(get_config "./" "default_variant")
-  IFS=' ' read -ra dirs <<< "$(echo "./"*/)"
+  if [ ${#dirs[@]} -eq 0 ]; then
+    IFS=' ' read -ra dirs <<< "$(echo "./"*/)"
+  fi
 
   for dir in "${dirs[@]}"; do
     if [ -a "${dir}/Dockerfile" ] || [ -a "${dir}/${default_variant}/Dockerfile" ]; then
diff --git a/update.sh b/update.sh
index 0b6aaf69d..cd73b6e22 100755
--- a/update.sh
+++ b/update.sh
@@ -189,6 +189,8 @@ function update_node_version() {
   )
 }
 
+pids=()
+
 for version in "${versions[@]}"; do
   parentpath=$(dirname "${version}")
   versionnum=$(basename "${version}")
@@ -201,8 +203,6 @@ for version in "${versions[@]}"; do
   # See details in function.sh
   IFS=' ' read -ra variants <<< "$(get_variants "${parentpath}")"
 
-  pids=()
-
   if [ -f "${version}/Dockerfile" ]; then
     if [ "${update_version}" -eq 0 ]; then
       update_node_version "${baseuri}" "${versionnum}" "${parentpath}/Dockerfile.template" "${version}/Dockerfile" &