Always use the version from the Dockerfile to construct the container…

… filename

Commit 1a8b6a8 already used the version if
the name and version was defined. We now also use the version if the name
is not defined by using the repository part of the first tag as name.

build-recipe-docker

@@ -278,7 +278,13 @@ recipe_build_docker() {
     mkdir -p $BUILD_ROOT$TOPDIR/DOCKER
     FILENAME=$(perl -I$BUILD_DIR -MBuild::Docker -e Build::Docker::show -- "$BUILD_ROOT/$TOPDIR/SOURCES/$RECIPEFILE" filename)
     if test -z "$FILENAME" ; then
-	FILENAME="$FIRSTTAG"
+	# check if there is a version defined. if yes, keep the repository part and overwrite the tag
+	FILENAME=$(perl -I$BUILD_DIR -MBuild::Docker -e Build::Docker::show -- "$BUILD_ROOT/$TOPDIR/SOURCES/$RECIPEFILE" version)
+	if test -n "$FILENAME" ; then
+	    FILENAME="${FIRSTTAG%%:*}:$FILENAME"
+	else
+	    FILENAME="$FIRSTTAG"
+	fi
     fi
     FILENAME="${FILENAME//[\/:]/-}"
     test -n "$GOOS" -a "$GOOS" != "linux" && FILENAME="${FILENAME}_$GOOS"