Dockerfile

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FROM alpine:3.13.2
# hadolint ignore=DL3018
RUN apk add --no-cache bash ca-certificates openssl krb5-server krb5 wget && update-ca-certificates && \
   wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64 && \
   chmod +x /usr/local/bin/dumb-init
WORKDIR /opt
COPY krb5.conf /etc/
COPY kadm5.acl /var/lib/krb5kdc/kadm5.acl
RUN kdb5_util create -s -P Welcome1 && kadmin.local -q "addprinc -randkey admin/admin@EXAMPLE.COM"
ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]