split.nf: use lbmc/alpine:3.17

src/modules/split.nf

@@ -2,7 +2,7 @@ process SPLIT {
     tag "$meta.id"
     label 'small_mem_mono_cpus'
 
-    container "alpine:3.17"
+    container "lbmc/alpine:3.17"
 
     input:
     tuple val(meta), path(fastq)