diff --git a/Dockerfile b/Dockerfile
index 969019a..1621ef3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,12 +20,11 @@ COPY src/ src/
 COPY --from=frontend /ui/dist/ src/main/resources/static/
 RUN --mount=type=cache,target=/root/.m2/repository ./mvnw package -DskipTests -U -B
 
-# Runtime: Chainguard Wolfi-based JRE (glibc, daily CVE refresh, non-root by default)
-FROM cgr.dev/chainguard/jre:openjdk-21
+# Runtime: BellSoft Liberica JRE 21 on Alpaquita Linux (glibc, minimal, 199 MB)
+FROM bellsoft/liberica-runtime-container:jre-21-slim-glibc
 WORKDIR /app
-USER root
-RUN mkdir -p /data/jars && chown -R nonroot:nonroot /data
-COPY --chown=nonroot:nonroot --from=build /build/target/*.jar app.jar
-USER nonroot
+RUN mkdir -p /data/jars && chown -R nobody:nobody /data /app
+COPY --chown=nobody:nobody --from=build /build/target/*.jar app.jar
+USER nobody
 EXPOSE 8080
 ENTRYPOINT ["java", "-jar", "app.jar"]
diff --git a/docker/runtime-base/Dockerfile b/docker/runtime-base/Dockerfile
index f48daa8..ca75e8f 100644
--- a/docker/runtime-base/Dockerfile
+++ b/docker/runtime-base/Dockerfile
@@ -1,7 +1,6 @@
-# Wolfi-based JRE, glibc, daily-rebuilt with near-zero baseline CVEs,
-# signed images + SBOM published, non-root by default. Pin by digest in
-# production overlays.
-FROM cgr.dev/chainguard/jre:openjdk-21
+# BellSoft Liberica JRE 21 on Alpaquita Linux (glibc, minimal, 199 MB).
+# Pin by digest in production overlays.
+FROM bellsoft/liberica-runtime-container:jre-21-slim-glibc
 
 WORKDIR /app
 
@@ -15,3 +14,4 @@ COPY cameleer-log-appender.jar /app/cameleer-log-appender.jar
 # -cp + main; native: exec) and overrides via withCmd("sh","-c",...).
 # Setting one here only creates drift between this image and the actual
 # runtime command.
+USER nobody