Add env for HCP_PACKER_BUILD_FINGERPRINT

internal/registry/env/variables.go

@@ -1,8 +1,9 @@
 package env
 
 const (
-	HCPClientID       = "HCP_CLIENT_ID"
-	HCPClientSecret   = "HCP_CLIENT_SECRET"
-	HCPPackerRegistry = "HCP_PACKER_REGISTRY"
-	HCPPackerBucket   = "HCP_PACKER_BUCKET_NAME"
+	HCPClientID               = "HCP_CLIENT_ID"
+	HCPClientSecret           = "HCP_CLIENT_SECRET"
+	HCPPackerRegistry         = "HCP_PACKER_REGISTRY"
+	HCPPackerBucket           = "HCP_PACKER_BUCKET_NAME"
+	HCPPackerBuildFingerprint = "HCP_PACKER_BUILD_FINGERPRINT"
 )

internal/registry/types.iterations.go

@@ -8,6 +8,7 @@ import (
 
 	git "github.com/go-git/go-git/v5"
 	registryimage "github.com/hashicorp/packer-plugin-sdk/packer/registry/image"
+	"github.com/hashicorp/packer/internal/registry/env"
 )
 
 type Iteration struct {
@@ -32,7 +33,7 @@ func NewIteration(opts IterationOptions) (*Iteration, error) {
 
 	// By default we try to load a Fingerprint from the environment variable.
 	// If no variable is defined we should try to load a fingerprint from Git, or other VCS.
-	i.Fingerprint = os.Getenv("HCP_PACKER_BUILD_FINGERPRINT")
+	i.Fingerprint = os.Getenv(env.HCPPackerBuildFingerprint)
 
 	// get a Git SHA
 	if i.Fingerprint != "" {