update dockerfile

Dockerfile

@@ -1,12 +1,5 @@
 # Extract graphviz and dependencies
-FROM golang:1.22-bullseye AS deb_extractor
-RUN cd /tmp && \
-    apt-get update && apt-get download \
-        graphviz libgvc6 libcgraph6 libltdl7 libxdot4 libcdt5 libpathplan4 libexpat1 zlib1g && \
-    mkdir /dpkg && \
-    for deb in *.deb; do dpkg --extract $deb /dpkg || exit 10; done
-
-FROM golang:1.22-bullseye AS builder
+FROM golang:1.24-bookworm AS builder
 COPY . /go/src/pprofweb/
 WORKDIR /go/src/pprofweb
 RUN go build -o server ./pkg/webserver