add cl image override

Author: skudasov

framework/components/simple_node_set/node_set.go

@@ -7,6 +7,7 @@ import (
 	"github.com/smartcontractkit/chainlink-testing-framework/framework/components/clnode"
 	"github.com/smartcontractkit/chainlink-testing-framework/framework/components/postgres"
 	"golang.org/x/sync/errgroup"
+	"os"
 	"slices"
 	"strings"
 	"sync"
@@ -79,6 +80,8 @@ func sharedDBSetup(in *Input, bcOut *blockchain.Output) (*Output, error) {
 	}
 	nodeOuts := make([]*clnode.Output, 0)
 
+	envImage := os.Getenv("CHAINLINK_IMAGE")
+
 	// to make it easier for chaos testing we use static ports
 	// there is no need to check them in advance since testcontainers-go returns a nice error
 	var (
@@ -140,6 +143,10 @@ func sharedDBSetup(in *Input, bcOut *blockchain.Output) (*Output, error) {
 				},
 			}
 
+			if envImage != "" {
+				nodeSpec.Node.Image = envImage
+			}
+
 			dbURLHost := strings.Replace(dbOut.Url, "/chainlink?sslmode=disable", fmt.Sprintf("/db_%d?sslmode=disable", i), -1)
 			dbURL := strings.Replace(dbOut.DockerInternalURL, "/chainlink?sslmode=disable", fmt.Sprintf("/db_%d?sslmode=disable", i), -1)
 			dbSpec := &postgres.Output{