fix: license header in Dockerfile.gitpod

Signed-off-by: nscuro <nscuro@protonmail.com>

.licenserc.yml

@@ -9,7 +9,7 @@ header:
     - "**/testdata/**"
     - ".github/**"
     - ".gitignore"
-    - ".gitpod.*"
+    - ".gitpod.yml"
     - ".golangci.yml"
     - ".goreleaser.yml"
     - ".licenserc.yml"

Dockerfile.gitpod

@@ -1,3 +1,20 @@
+# This file is part of CycloneDX Go
+#
+# Licensed under the Apache License, Version 2.0 (the “License”);
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an “AS IS” BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) OWASP Foundation. All Rights Reserved.
+
 FROM gitpod/workspace-go:latest@sha256:2be827f022fddfb5c244b3c6705f971ba3de07490d64789cd6b2aa420176f4b1
 
 USER root