feat: add node init config to k8s plugin

agent/Dockerfile

@@ -7,5 +7,5 @@ RUN go mod download
 COPY . .
 RUN go build -v -o /usr/local/bin/agent ./...
 
-CMD ["app"]
+CMD ["agent"]
 

nextflow/plugins/nf-k8s/src/main/nextflow/k8s/K8sConfig.groovy

@@ -16,6 +16,7 @@
 
 package nextflow.k8s
 
+import nextflow.config.scopes.Config
 import nextflow.k8s.client.K8sRetryConfig
 
 import javax.annotation.Nullable
@@ -211,6 +212,10 @@ class K8sConfig implements ConfigScope {
     """)
     final String workDir
 
+    @ConfigOption
+    @Description("Node initialization config")
+    final K8sNodeInitConfig nodeInit
+
     /* required by extension point -- do not remove */
     K8sConfig() {
         this(Collections.emptyMap())
@@ -260,6 +265,8 @@ class K8sConfig implements ConfigScope {
             pod.securityContext = new PodSecurityContext(runAsUser)
         else if( securityContext )
             pod.securityContext = new PodSecurityContext(securityContext)
+
+        nodeInit = new K8sNodeInitConfig(opts.nodeInit as Map ?: Collections.emptyMap())
     }
 
     private PodOptions createPodOptions( value ) {

nextflow/plugins/nf-k8s/src/main/nextflow/k8s/K8sNodeInitConfig.groovy

@@ -0,0 +1,42 @@
+package nextflow.k8s
+
+import groovy.util.logging.Slf4j
+import nextflow.config.scopes.Config
+import nextflow.config.spec.ConfigScope
+import nextflow.config.spec.ScopeName
+import nextflow.config.spec.ConfigOption
+import groovy.transform.CompileStatic
+import nextflow.script.dsl.Description
+
+@CompileStatic
+@Slf4j
+@ScopeName("nodeInit")
+@Description("The nodeInit scope contains options for the pre-workflow execution initialization of nodes")
+class K8sNodeInitConfig implements ConfigScope {
+    @ConfigOption
+    @Description("enables the pre-workflow execution deployment of pods")
+    final boolean enabled;
+
+    @ConfigOption
+    @Description("the used image")
+    final String image;
+
+    @ConfigOption
+    @Description("the start-command")
+    final List<String> command;
+
+    @ConfigOption
+    @Description("the pod state to wait on")
+    final String wait;
+
+    K8sNodeInitConfig() {
+        this(Collections.emptyMap())
+    }
+
+    K8sNodeInitConfig(Map opts) {
+        enabled = opts.enabled as boolean
+        image = opts.image as String
+        command = opts.command as List<String>
+        wait = opts.wait as String
+    }
+}

nextflow/plugins/nf-k8s/src/test/nextflow/k8s/K8sConfigTest.groovy

@@ -484,4 +484,14 @@ class K8sConfigTest extends Specification {
         cfg.clientRefreshInterval == Duration.of('1h')
     }
 
+    def 'should have nodeInit image' () {
+        when:
+        def cfg = new K8sConfig(
+            nodeInit: [
+                image: 'some-image:0'
+            ]
+        )
+        then:
+        cfg.nodeInit.image == 'some-image:0'
+    }
 }