Extending keyserver timeout to make alpine build more forgiving (#3520)

* Extending keyserver timeout to make alpine build more forgiving

Right now, about 10% of alpine linux x64 builds fail due to
timeouts when requesting keys from the keyserver.

The hope is that these timeouts are just temporary slowness due
to server load, and that an extended timeout is the correct fix.

Also includes removing a line of code duplication. If our problem
is indeed caused by server load, then halving the number of
server requests can only improve matters.

Signed-off-by: Adam Farley <[email protected]>

sbin/prepareWorkspace.sh

@@ -330,11 +330,13 @@ checkingAndDownloadingAlsa() {
 
     echo "GNUPGHOME=$GNUPGHOME"
     mkdir -p "$GNUPGHOME" && chmod og-rwx "$GNUPGHOME"
-    gpg --keyserver keyserver.ubuntu.com --recv-keys "${ALSA_LIB_GPGKEYID}"
     # Should we clear this directory up after checking?
     # Would this risk removing anyone's existing dir with that name?
     # Erring on the side of caution for now
-    gpg --keyserver keyserver.ubuntu.com --recv-keys "${ALSA_LIB_GPGKEYID}"
+    # Note: the uptime command below is to aid diagnostics for this issue:
+    # https://github.com/adoptium/temurin-build/issues/3518#issuecomment-1792606345
+    uptime
+    gpg --keyserver keyserver.ubuntu.com --keyserver-options timeout=300 --recv-keys "${ALSA_LIB_GPGKEYID}"
     echo -e "5\ny\n" |  gpg --batch --command-fd 0 --expert --edit-key "${ALSA_LIB_GPGKEYID}" trust;
     gpg --verify alsa-lib.tar.bz2.sig alsa-lib.tar.bz2 || exit 1