Merge pull request #1585 from infosiftr/arch-not-supported

Add a separate explicit message for architectures which are not supported for an image

.template-helpers/generate-dockerfile-links-partial.sh

@@ -13,6 +13,11 @@ if [ -z "${BASHBREW_LIBRARY:-}" ]; then
 	repo="https://github.com/docker-library/official-images/raw/master/library/$repo"
 fi
 
+if [ -n "$ARCH_SPECIFIC_DOCS" ] && archTags="$(bashbrew cat --format '{{ range .Entries }}{{ if .HasArchitecture arch }}{{ .Tags | first }}{{ "\n" }}{{ end }}{{ end }}' "$repo")" && [ -z "$archTags" ]; then
+	echo "**WARNING:** THIS IMAGE *IS NOT SUPPORTED* ON THE \`$BASHBREW_ARCH\` ARCHITECTURE"
+	exit
+fi
+
 bashbrew cat \
-		-F "$(dirname "$BASH_SOURCE")/$(basename "$BASH_SOURCE" .sh).tmpl" \
-		"$repo"
+	-F "$(dirname "$BASH_SOURCE")/$(basename "$BASH_SOURCE" .sh).tmpl" \
+	"$repo"