Update Dockerfile

1 job for master in 42 seconds (queued for 1 second)
Name Stage Failure
failed
build_image Build Image
#5 32.01 WARNING: You are using pip version 20.1.1; however, version 20.2.4 is available.
#5 32.01 You should consider upgrading via the '/usr/bin/python3 -m pip install --upgrade pip' command.
#5 ERROR: executor failed running [/bin/sh -c set -ex && apk add --virtual .build-deps build-base && apk add --no-cache git python3 && python3 -m ensurepip && pip3 install mkdocs==1.1.2 && apk del .build-deps]: runc did not terminate sucessfully
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> [2/3] RUN set -ex && apk add --virtual .build-deps build-base && apk add --no-cache git python3 && python3 -m ensurepip && pip3 install mkdocs==1.1.2 && apk del .build-deps:
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failed to solve with frontend dockerfile.v0: failed to build LLB: executor failed running [/bin/sh -c set -ex && apk add --virtual .build-deps build-base && apk add --no-cache git python3 && python3 -m ensurepip && pip3 install mkdocs==1.1.2 && apk del .build-deps]: runc did not terminate sucessfully
Cleaning up file based variables
ERROR: Job failed: exit status 1