cli/context/store: use lazyregexp to compile regexes on first use

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

cli/context/store/store.go

@@ -14,17 +14,17 @@ import (
 	"net/http"
 	"path"
 	"path/filepath"
-	"regexp"
 	"strings"
 
+	"github.com/docker/cli/internal/lazyregexp"
 	"github.com/docker/docker/errdefs"
 	"github.com/opencontainers/go-digest"
 	"github.com/pkg/errors"
 )
 
 const restrictedNamePattern = "^[a-zA-Z0-9][a-zA-Z0-9_.+-]+$"
 
-var restrictedNameRegEx = regexp.MustCompile(restrictedNamePattern)
+var restrictedNameRegEx = lazyregexp.New(restrictedNamePattern)
 
 // Store provides a context store for easily remembering endpoints configuration
 type Store interface {