Add timestamps to appimages

pkg/appimage/appimagebuild

@@ -22,7 +22,7 @@ install -D -m 755 /usr/lib/x86_64-linux-gnu/libgnome-keyring.so.0 ${APPDIR}/usr/
 curl -fsSL -o ocs-manager https://git.opendesktop.org/akiraohgaki/ocs-manager/uploads/d3dc42436b82d11360ebc96b38d4aaf4/ocs-manager-0.8.1-1-x86_64.AppImage
 install -D -m 755 ocs-manager ${APPDIR}/usr/bin/ocs-manager
 
-IMWHEEL_PATH=`which imwheel`
+IMWHEEL_PATH=$(which imwheel)
 install -D -m 755 ${IMWHEEL_PATH} ${APPDIR}/usr/bin/ocs-imwheel
 install -D -m 644 imwheel.conf ${APPDIR}/usr/share/imwheel/.imwheelrc
 
@@ -31,4 +31,9 @@ chmod 755 appimagetool
 ./appimagetool --appimage-extract
 ./squashfs-root/AppRun -u "${UPDINFO}" ${APPDIR}
 
+# Only timestamp development branches
+if [ "${CI_COMMIT_REF_SLUG}" != "master" ]; then
+  PKGREL=dev-${CI_COMMIT_SHORT_SHA}-$(date +"%Y-%m-%d_%H-%M-%S")
+fi
+
 mv *-x86_64.AppImage ../${PKGNAME}-${PKGVER}-${PKGREL}-x86_64.AppImage