[GH-32] Upload bin directory.

For each task, we need to upload the bin folder to the work directory so
that the worker node could access them.

plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy

@@ -18,6 +18,7 @@ package com.memverge.nextflow
 import groovy.transform.CompileStatic
 import groovy.util.logging.Slf4j
 import nextflow.executor.AbstractGridExecutor
+import nextflow.extension.FilesEx
 import nextflow.processor.TaskConfig
 import nextflow.processor.TaskRun
 import nextflow.util.ServiceName
@@ -58,11 +59,25 @@ class FloatGridExecutor extends AbstractGridExecutor {
     protected List<String> getDirectives(TaskRun task, List<String> initial) {
         log.info "[float] switch task ${task.id} to ${task.workDirStr}"
         floatJobs.setWorkDir(task.id, task.workDirStr)
+        uploadBinDir(task)
+
         initial << 'cd'
         initial << task.workDirStr
         return initial
     }
 
+    private boolean needBinDir() {
+        return session.binDir && !session.binDir.empty() && !session.disableRemoteBinDir
+    }
+
+    private void uploadBinDir(TaskRun task) {
+        // upload local binaries
+        if (needBinDir()) {
+            log.info "Uploading local `bin` scripts folder to ${task.workDirStr}"
+            FilesEx.copyTo(session.binDir, task.workDirStr)
+        }
+    }
+
     private void validateTaskConf(TaskConfig config) {
         if (!config.nfs && !floatConf.nfs) {
             log.error '[float] missing "nfs": need a nfs to run float jobs'