goreleaser.dockerfile

# Copyright 2024 Nokia
#
# 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.

FROM golang:1.21 AS builder
ARG USERID=10000
# no need to include cgo bindings
ENV CGO_ENABLED=0 GOOS=linux GOARCH=amd64

# add ca certificates and timezone data files
RUN apt-get install --yes --no-install-recommends ca-certificates tzdata

# add unprivileged user
RUN adduser --shell /usr/sbin/nologin --uid $USERID --disabled-login --no-create-home --home /app/ --gecos '' app \
    && sed -i -r "/^(app|root)/!d" /etc/group /etc/passwd \
    && sed -i -r 's#^(.*):[^:]*$#\1:/bin/false#' /etc/passwd
RUN mkdir -p /schemas
#

FROM scratch
ARG USERID=10000
# add-in our timezone data file
COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
# add-in our unprivileged user
COPY --from=builder /etc/passwd /etc/group /etc/shadow /etc/
# add-in our ca certificates
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

COPY --chown=$USERID:$USERID data-server /app/
COPY --from=builder --chown=$USERID:$USERID /schemas /schemas
WORKDIR /app

# from now on, run as the unprivileged user
USER $USERID

ENTRYPOINT [ "/app/data-server" ]