chore: use common curl image
diff --git a/images/helm/Earthfile b/images/helm/Earthfile
index 6809e37..d0b5155 100644
--- a/images/helm/Earthfile
+++ b/images/helm/Earthfile
@@ -1,11 +1,10 @@
 VERSION 0.7
 
 binary:
-  FROM curlimages/curl:7.78.0
+  FROM ../curl+image
   ARG TARGETOS
   ARG TARGETARCH
   ARG VERSION=3.14.0
-  WORKDIR /tmp
   RUN curl -LO https://get.helm.sh/helm-v3.14.0-${TARGETOS}-${TARGETARCH}.tar.gz
   RUN tar -zxvf /tmp/helm-v3.14.0-${TARGETOS}-${TARGETARCH}.tar.gz
   RUN ${TARGETOS}-${TARGETARCH}/helm version