Docker images use ubuntu noble jre base image, solarthing docker imag…

…e now has nc installed

build.gradle

@@ -169,7 +169,7 @@ subprojects {
             error("PackageLocation")
 //            warn("ParameterMissingNullable") // This is useful. Maybe uncomment if we become more religious about use of @Nullable
             error("PrivateConstructorForUtilityClass") // not completely ideal for spring classes with static initialization
-            warn("RemoveUnusedImports")
+            warn("RemoveUnusedImports") // Only a warning because https://github.com/antlr/antlr4/issues/2568 and https://github.com/google/error-prone/issues/463
 //            warn("ReturnMissingNullable") // Useful onlyl if we become more religious about use of @Nullable
             warn("ReturnsNullCollection")
             warn("SwitchDefault")

docker/solarthing-server/Dockerfile

@@ -1,10 +1,10 @@
-FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-jammy as builder
+FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-noble as builder
 ARG JAR_LOCATION
 COPY ${JAR_LOCATION} application.jar
 RUN java -Djarmode=layertools -jar application.jar extract
 
 
-FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-jammy
+FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-noble
 
 RUN ["mkdir", "/solarthing"]
 WORKDIR "/solarthing"

docker/solarthing/Dockerfile

@@ -1,8 +1,14 @@
-FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-jammy
+FROM ghcr.io/retrodaredevil/lavender-jre:21-ubuntu-noble
 ARG JAR_LOCATION
 ARG COMMIT_HASH=""
 ARG REF=""
 
+# Install netcat because users may want to run nc to access configuration server
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends netcat-openbsd && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
 RUN ["mkdir", "/solarthing"]
 COPY --chmod=0444 ${JAR_LOCATION} /solarthing/solarthing.jar
 ENV DOCKER=""