dockerfiles/build.sh: fix buildx detection

`docker <subcommand> --help` cannot be used to detect whether a sub command is available because it exits with 0 no matter if the sub command exists or not. Use `docker buildx version` as a test for buildx support instead. Fixes: 17765c7 ("dockerfiles: support for docker/podman buildx") Reported-by: Sebastian Groß <[email protected]> Signed-off-by: Bastian Krause <[email protected]>
Bastian-Krause · Feb 4, 2025 · d6ebde1 · d6ebde1
1 parent a8b6ab3
commit d6ebde1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/dockerfiles/build.sh b/dockerfiles/build.sh
@@ -31,7 +31,7 @@ has_buildx() {
     local docker_cmd
     docker_cmd="${1}"
 
-    "${docker_cmd}" buildx --help >/dev/null 2>&1
+    "${docker_cmd}" buildx version >/dev/null 2>&1
 }
 
 get_docker_cmd() {