Slims jenkins setup b/c resource shortage

Dockerfile.ci

@@ -1,4 +1,4 @@
-FROM ubuntu:24.04
+FROM debian:bookworm-slim
 
 ENV DEBIAN_FRONTEND=noninteractive
 
@@ -9,8 +9,9 @@ RUN apt-get update && \
       cmake \
       ninja-build \
       git \
-      build-essential \
+      g++ \
+      make \
       ca-certificates && \
     rm -rf /var/lib/apt/lists/*
 
-WORKDIR /workspace
+WORKDIR /workspace

Jenkinsfile

@@ -1,8 +1,9 @@
 pipeline {
   agent {
-    dockerfile {
-      filename 'Dockerfile.ci'
+    docker {
+      image 'lifemaps/ci-cpp:latest'
       reuseNode true
+      args '-u root:root'
     }
   }