fixed conda lockfile rendering in build view

src/main/groovy/io/seqera/wave/controller/ViewController.groovy

@@ -233,8 +233,31 @@ class ViewController {
         }
         //add conda lock file when available
         if( buildLogService && result.condaFile ) {
-            binding.build_conda_lock_data = buildLogService.fetchCondaLockString(result.buildId)
-            binding.build_conda_lock_url = "$serverUrl/v1alpha1/builds/${result.buildId}/condalock"
+            def condaLock = buildLogService.fetchCondaLockString(result.buildId)
+            def buildId = result.buildId
+
+            /*
+            When a container image is cached, dockerfile does not get executed.
+            In that case condalock file will contain "cat environment.lock" because its not been executed.
+            So wave will check the previous builds of that container image
+            and render the condalock file from latest successful build
+            and replace with the current build's condalock file.
+            */
+            if ( condaLock && condaLock.contains('cat environment.lock') ) {
+                condaLock = null //if there is no conda lock file, don't show the conda lock data
+                def builds = persistenceService.allBuilds(result.buildId.split('-')[1].split('_')[0])
+                for (def build : builds) {
+                    if ( build.succeeded() ){
+                        buildId = build.buildId
+                        condaLock = buildLogService.fetchCondaLockString(build.buildId)
+                        if ( !condaLock.contains('cat environment.lock') )
+                            break
+                    }
+                }
+            }
+
+            binding.build_conda_lock_data = condaLock
+            binding.build_conda_lock_url = "$serverUrl/v1alpha1/builds/${buildId}/condalock"
         }
         // result the main object
         return binding