feat: simpler test workflow with configuration

test/main.nf

@@ -1,52 +1,18 @@
-params.str = "Hello, world!"
+nextflow.enable.dsl = 2
 
-process split {
-	publishDir "results/lower"
-
-	input:
-	val x
+process hello {
+	container 'ubuntu:22.04'
 
 	output:
-	path 'chunk_*'
+	path 'hello.txt'
 
 	script:
 	"""
-	printf '${x}' | split -b 6 - chunk_
-	"""
-}
-
-process to_upper {
-	tag "$y"
-
-	input:
-	path y
-
-	output:
-	path 'upper_*'
-
-	script:
-	"""
-		cat $y | tr '[a-z]' '[A-Z]' > upper_${y}
+	echo "Hello, from kubernetes" > hello.txt
+	hostname >> hello.txt
 	"""
 }
 
 workflow {
-	main:
-	ch_str = channel.of(params.str)
-	ch_chunks = split(ch_str)
-	ch_upper = to_upper(ch_chunks.flatten())
-
-	publish:
-	lower = ch_chunks.flatten()
-	upper = ch_upper
-}
-
-output {
-	lower {
-		path 'lower'
-	}
-
-	upper {
-		path 'upper'
-	}
+	hello()
 }