Upgrade golang and base image to resolve CVEs

Author: shovan-mondal

chaoscenter/subscriber/Dockerfile

@@ -1,5 +1,5 @@
 # BUILD STAGE
-FROM golang:1.24 AS builder
+FROM golang:1.26 AS builder
 
 LABEL maintainer="LitmusChaos"
 
@@ -17,12 +17,14 @@ RUN CGO_ENABLED=0 go build -o /output/subscriber -v
 
 # Packaging stage
 # Use RedHat UBI minimal image as base
-FROM registry.access.redhat.com/ubi9/ubi-minimal:9.6
+FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
 
 LABEL maintainer="LitmusChaos"
 
 ENV APP_DIR="/litmus"
 
+RUN dnf update -y && dnf clean all
+
 COPY --from=builder /output/subscriber $APP_DIR/
 RUN chown 65534:0 $APP_DIR/subscriber && chmod 755 $APP_DIR/subscriber
 

chaoscenter/subscriber/go.mod

@@ -1,6 +1,6 @@
 module subscriber
 
-go 1.24.0
+go 1.26.0
 
 require (
 	github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24