feat: kubernetes basic integration

internal/auth/jwt/jwt.go

@@ -16,6 +16,7 @@ const keyRole = "role"
 func parseToken(ctx context.Context, keys jwk.Set, issuer string, rawToken string, acceptableSkew time.Duration) (jwt.Token, error) {
 	token, err := jwt.Parse(
 		[]byte(rawToken),
+		jwt.WithContext(ctx),
 		jwt.WithKeySet(keys, jws.WithRequireKid(false)),
 		jwt.WithIssuer(issuer),
 		jwt.WithValidate(true),
@@ -60,3 +61,17 @@ func GenerateToken(ctx context.Context, key jwk.Key, issuer, subject string, rol
 
 	return string(rawToken), nil
 }
+
+func GenerateTokenWithPrivateKey(ctx context.Context, privateKeyFile string, issuer string, subject string, role Role) (string, jwk.Key, error) {
+	key, err := jwk.LoadOrGenerate(privateKeyFile, jwk.DefaultKeySize)
+	if err != nil {
+		return "", nil, errors.WithStack(err)
+	}
+
+	token, err := GenerateToken(ctx, key, issuer, subject, role)
+	if err != nil {
+		return "", nil, errors.WithStack(err)
+	}
+
+	return token, key, nil
+}