Build: Add additional Flatpak build scripts

scripts/generate-metainfo.sh

@@ -1,13 +1,15 @@
 #!/usr/bin/env bash
 
-SCRIPTDIR=$(dirname "${BASH_SOURCE[0]}")
+SCRIPTDIR=$(realpath $(dirname "${BASH_SOURCE[0]}"))
 
 if [[ $# -lt 1 ]]; then
 	echo "Output file must be provided as a parameter"
 	exit 1
 fi
 
-OUTFILE=$1
+OUTFILE="$1"
+
+pushd "${SCRIPTDIR}"
 GIT_DATE=$(git log -1 --pretty=%cd --date=short)
 GIT_VERSION=$(git tag --points-at HEAD)
 GIT_HASH=$(git rev-parse HEAD)
@@ -18,6 +20,7 @@ if [[ "${GIT_VERSION}" == "" ]]; then
 		GIT_VERSION=$(git rev-parse HEAD)
 	fi
 fi
+popd
 
 echo "GIT_DATE: ${GIT_DATE}"
 echo "GIT_VERSION: ${GIT_VERSION}"