Upgrade Base Image to Ubuntu 24.04

Ubuntu 24.04 is a slightly smaller starting image.
Delete apt cache after installing packages to farther reduce image size.

Dockerfile

@@ -1,11 +1,12 @@
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 RUN apt-get update && \
-    DEBIAN_FRONTEND=noninteractive apt-get install -y curl jq
+    DEBIAN_FRONTEND=noninteractive apt-get install -y curl jq && \
+    rm -rf /var/lib/apt/lists/*
 
 COPY check   /opt/resource/check
 COPY in      /opt/resource/in
 COPY out     /opt/resource/out
 COPY card.jq /opt/resource/card.jq
 
-RUN chmod +x /opt/resource/out /opt/resource/in /opt/resource/check
+RUN chmod +x /opt/resource/out /opt/resource/in /opt/resource/check