Fix Release action

Dockerfile

@@ -1,5 +1,13 @@
 # syntax=docker/dockerfile:1
 
-FROM alpine:latest
+FROM ubuntu:22.04
+
+# Install basic runtime dependencies
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
 COPY khm /usr/local/bin/khm
+RUN chmod +x /usr/local/bin/khm
+
 ENTRYPOINT ["/usr/local/bin/khm"]