Added some additional logging and exposed parsed components

internal/parser/dockerfile/dockerfile.go

@@ -141,10 +141,14 @@ func parseRepositoriesFromDockerfileStage(dockerfileStage buildkitDockerfileInst
 
 			log.Tracef("Parsing RunCommand \"%s\" for repositories", runCommand.CmdLine)
 
-			_, err := typedCommandParser.GetRepositories(runCommand.CmdLine[0])
+			parsedRepositories, err := typedCommandParser.GetRepositories(runCommand.CmdLine[0])
 			if err != nil {
+				log.Fatalf("Unexpected error while parsing repositories: %s", err)
 				return nil, err
 			}
+			for _, parsedRepository := range parsedRepositories {
+				repositories = append(repositories, parsedRepository)
+			}
 		}
 	}
 
@@ -162,10 +166,14 @@ func parsePackagesFromDockerfileStage(dockerfileStage buildkitDockerfileInstruct
 
 			log.Tracef("Parsing RunCommand \"%s\" for packages", runCommand.CmdLine)
 
-			_, err := typedCommandParser.GetPinnedPackages(runCommand.CmdLine[0])
+			parsedPinnedPackages, err := typedCommandParser.GetPinnedPackages(runCommand.CmdLine[0])
 			if err != nil {
+				log.Fatalf("Unexpected error while parsing pinned packages: %s", err)
 				return nil, err
 			}
+			for _, parsedPinnedPackage := range parsedPinnedPackages {
+				packages = append(packages, parsedPinnedPackage)
+			}
 		}
 	}