Dockerfile.gosu

# Copyright (C) 2024-2025 Red Hat, Inc.
#
# 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.
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# SPDX-License-Identifier: Apache-2.0

FROM registry.access.redhat.com/ubi9/ubi-minimal:latest

ENV GOSU_VERSION=1.17
RUN microdnf update -y && \
    microdnf install -y wget && \
    microdnf clean all && rm -rf /var/cache/dnf
RUN set -eux; \
    rpmArch="$(rpm --query --queryformat='%{ARCH}' rpm)"; \
    case "$rpmArch" in \
        aarch64) dpkgArch='arm64' ;; \
        armv[67]*) dpkgArch='armhf' ;; \
        i[3456]86) dpkgArch='i386' ;; \
        ppc64le) dpkgArch='ppc64el' ;; \
        riscv64 | s390x) dpkgArch="$rpmArch" ;; \
        x86_64) dpkgArch='amd64' ;; \
        *) echo >&2 "error: unknown/unsupported architecture '$rpmArch'"; exit 1 ;; \
    esac; \
    wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
    chmod +x /usr/local/bin/gosu && \
    rm -rf /var/cache/dnf /tmp/*