retengr/mc-rebuild repository overview

⁠Retengr mc rebuild — unofficial archival image

This is a Retengr-built container of the upstream MinIO Client (mc) source release RELEASE.2024-11-21T17-21-54Z. The build checks the exact upstream commit before compiling. It was created to keep existing bucket-initialization jobs working after the upstream client image could no longer be pulled; it is not a maintained client distribution.

⁠Image details

MinIO's open-source products reached end of life in September 2025 and are no longer maintained by the upstream project. See the MinIO Legal Center⁠ and the archived mc repository⁠.

⁠Pull and verify

Use an explicit tag or digest; there is no latest tag.

docker pull --platform linux/amd64 retengr/mc-rebuild:RELEASE.2024-11-21T17-21-54Z
docker run --rm --platform linux/amd64 \
  retengr/mc-rebuild:RELEASE.2024-11-21T17-21-54Z --version

The image entrypoint is /usr/bin/mc. To use a host mc configuration that already contains an alias, mount it read-only at the configured path:

docker run --rm --platform linux/amd64 \
  -v "$HOME/.mc:/tmp/.mc:ro" \
  retengr/mc-rebuild:RELEASE.2024-11-21T17-21-54Z \
  ls my-alias/my-bucket

Do not put real access keys in a public README or in shell commands that may be retained in history. Compatibility depends on the S3 operations and target server you use; this historical client is not a guarantee of compatibility with every S3 implementation.

⁠Rebuild from source

The Dockerfile below fetches the pinned upstream tag and refuses to build if its commit does not match the expected revision. It cross-compiles for the requested target architecture.

To inspect the exact upstream source revision yourself, clone the release tag and check its commit:

git clone --depth 1 --branch RELEASE.2024-11-21T17-21-54Z \
  https://github.com/minio/mc.git mc-src
git -C mc-src rev-parse HEAD

The Docker build performs this clone and commit check automatically; the manual clone is only for inspection. The Dockerfile is self-contained and does not use mc-src as its build context.

Save the Dockerfile below as Dockerfile, then run:

docker buildx build --platform linux/amd64 \
  --tag local/mc-rebuild:RELEASE.2024-11-21T17-21-54Z \
  --load .

The Retengr build.sh wrapper publishes to Retengr's private ECR repository and depends on its Terraform outputs and AWS credentials. It is not required to build this image; the command above builds it locally.

# syntax=docker/dockerfile:1

ARG RELEASE=RELEASE.2024-11-21T17-21-54Z
ARG COMMIT=1681e4497c09d7438a34e846f76dbde972ab7daf

FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.24-alpine AS build
ARG RELEASE
ARG COMMIT
ARG TARGETOS
ARG TARGETARCH

RUN apk add --no-cache git ca-certificates
WORKDIR /src
RUN git clone --depth 1 --branch "${RELEASE}" https://github.com/minio/mc.git . && \
    test "$(git rev-parse HEAD)" = "${COMMIT}"

RUN LDFLAGS="$(MC_RELEASE=RELEASE go run buildscripts/gen-ldflags.go)" && \
    CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
    go build -trimpath -tags kqueue --ldflags "${LDFLAGS}" -o /out/mc

FROM registry.access.redhat.com/ubi9/ubi-micro:9.6
ARG RELEASE
ARG COMMIT

LABEL name="MinIO Client" \
      version="${RELEASE}" \
      org.opencontainers.image.source="https://github.com/minio/mc" \
      org.opencontainers.image.revision="${COMMIT}" \
      org.opencontainers.image.version="${RELEASE}" \
      org.opencontainers.image.vendor="Retengr (rebuild from source)"

ENV MC_CONFIG_DIR=/tmp/.mc

COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=build --chmod=755 /out/mc /usr/bin/mc
COPY --from=build /src/LICENSE /src/CREDITS /licenses/

ENTRYPOINT ["mc"]

⁠License and notices

The upstream mc source is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0). The image includes the upstream LICENSE and CREDITS files under /licenses/. The source tag and the complete Dockerfile used for this rebuild are provided above. Review the license and obtain qualified legal advice for your use case; this README is not legal advice. See the upstream license⁠ and the GNU AGPLv3⁠.

Retengr is not affiliated with or endorsed by MinIO, Inc. MinIO and related marks belong to their respective owners.