feat: Add helm binary (required for helm package action)

Dockerfile

@@ -13,6 +13,10 @@ ADD https://${REPO_USERNAME}:${REPO_PASSWORD}@sn.itch.fyi/Repository/bin/VMware/
 RUN apk --update add --no-cache \
       curl \
       jq && \
+    curl -L https://api.github.com/repos/helm/helm/releases/latest | \
+      jq -r '.tag_name' | \
+      xargs -I {} curl -L -o /tmp/helm.tar.gz https://get.helm.sh/helm-{}-linux-amd64.tar.gz && \
+    tar -xzf /tmp/helm.tar.gz --strip-components=1 -C /tmp && \
     curl -L https://api.github.com/repos/mikefarah/yq/releases/latest | \
       jq -r '.assets[] | select(.name | endswith("yq_linux_amd64")) | .browser_download_url' | \
       xargs -I {} curl -L -o /tmp/yq {} && \
@@ -24,6 +28,7 @@ COPY --from=packer /bin/packer /bin/packer
 COPY --from=terraform /bin/terraform /bin/terraform
 COPY --from=download /tmp/ovftool-installer /tmp/ovftool-installer
 COPY --from=download /tmp/yq /bin/yq
+COPY --from=download /tmp/helm /usr/bin/helm
 
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en