Rename product to dockmv (container, image, module, env vars)

Container/image/service name, Go module path, CLI binary name, and
DOCKER_MIGRATE_* env vars still used the old working name; the project
is branded DockMV everywhere else (README, logo, Gitea repo).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

test/e2e_test.go

@@ -20,10 +20,10 @@ import (
 	"testing"
 	"time"
 
-	"github.com/arescom/docker-migrate/internal/dkr"
-	"github.com/arescom/docker-migrate/internal/job"
-	"github.com/arescom/docker-migrate/internal/migrate"
-	"github.com/arescom/docker-migrate/internal/spec"
+	"github.com/arescom/dockmv/internal/dkr"
+	"github.com/arescom/dockmv/internal/job"
+	"github.com/arescom/dockmv/internal/migrate"
+	"github.com/arescom/dockmv/internal/spec"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/image"
 	"github.com/docker/docker/api/types/mount"

test/errors_test.go

@@ -5,7 +5,7 @@ package e2e
 import (
 	"errors"
 
-	"github.com/arescom/docker-migrate/internal/sshx"
+	"github.com/arescom/dockmv/internal/sshx"
 )
 
 // asHostKeyError unwraps err into a *sshx.HostKeyError if it is one.

test/ssh_e2e_test.go

@@ -10,11 +10,11 @@ import (
 	"testing"
 	"time"
 
-	"github.com/arescom/docker-migrate/internal/dkr"
-	"github.com/arescom/docker-migrate/internal/job"
-	"github.com/arescom/docker-migrate/internal/migrate"
-	"github.com/arescom/docker-migrate/internal/spec"
-	"github.com/arescom/docker-migrate/internal/sshx"
+	"github.com/arescom/dockmv/internal/dkr"
+	"github.com/arescom/dockmv/internal/job"
+	"github.com/arescom/dockmv/internal/migrate"
+	"github.com/arescom/dockmv/internal/spec"
+	"github.com/arescom/dockmv/internal/sshx"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/api/types/volume"