Alpine linux ALSA gpg fails due to path length (#3643)

Signed-off-by: Andrew Leonard <anleonar@redhat.com>

sbin/prepareWorkspace.sh

@@ -319,6 +319,13 @@ checkingAndDownloadingAlsa() {
     curl -o "alsa-lib.tar.bz2" "$ALSA_BUILD_URL"
     curl -o "alsa-lib.tar.bz2.sig" "https://www.alsa-project.org/files/pub/lib/alsa-lib-${ALSA_LIB_VERSION}.tar.bz2.sig"
 
+    ## This affects Alpine docker images and also evaluation pipelines
+    if [ "$OPERATING_SYSTEM" == "alpine-linux" ] && [ "$(pwd | wc -c)" -gt 83 ]; then
+        # Use /tmp for alpine in preference to $HOME as Alpine fails gpg operation if PWD > 83 characters
+        # Alpine also cannot create ~/.gpg-temp within a docker context
+        GNUPGHOME="$(mktemp -d /tmp/.gpg-temp.XXXXXX)"
+    fi
+
     echo "GNUPGHOME=$GNUPGHOME"
     mkdir -p "$GNUPGHOME" && chmod og-rwx "$GNUPGHOME"
     # Should we clear this directory up after checking?