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It has been observed that the DiagTrack service in the pause image is consuming a non-trivial amount of CPU. We don't need this service in the pause image, so we should disable it. We can disable the service by running chntpw in a docker buildx Linux stage and then copy the SYSTEM file back to the final Windows image. Co-Authored-By: Mark Rossetti <marosset@microsoft.com> Co-Authored-By: Davanum Srinivas <davanum@gmail.com>
31 lines
1.3 KiB
Plaintext
31 lines
1.3 KiB
Plaintext
# Copyright 2020 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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ARG BASE
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FROM ${BASE}
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ARG ARCH
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ADD bin/pause-windows-${ARCH}.exe /pause.exe
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ADD bin/wincat-windows-amd64 /Windows/System32/wincat.exe
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# NOTE(claudiub): We're replacing the diagtrack.dll as a means to disable the
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# DiagTrack service (it cannot run without this DLL). We do not need this
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# service in the pause image and there's no reason for it to have any CPU usage.
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ADD windows/pause.c /Windows/System32/diagtrack.dll
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# NOTE(claudiub): docker buildx sets the PATH env variable to a Linux-like PATH,
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# which is not desirable. See: https://github.com/moby/buildkit/issues/1560
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# TODO(claudiub): remove this once the issue has been resolved.
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ENV PATH="C:\Windows\system32;C:\Windows;"
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ENTRYPOINT ["/pause.exe"]
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