moby

Issues somebody may already be working on are listed last. List everything by date

• Attestation manifest can still serialize `"layers": null` when a platform has an empty attestation list (follow-up to #7341 / #7343)

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  Difficulty 2/5 1-3 hours Newbie friendliness 75/100

  moby/buildkit#7411 · Opened Nov 11, 2026

  Maintainers usually reply within 2 days

• Rootless: RUN fails with "Input/output error" when the state dir is on tmpfs (Linux >= 6.6)

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/buildkit#7410 · Opened Nov 11, 2026

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• dockerd 29.9.2 enters permanent ~50-65% CPU spin after batch container recreation; triggered by "session healthcheck failed fatally (only one connection allowed)"; only a daemon restart clears it

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  status/triage

  Difficulty 4/5 3-5 days Newbie friendliness 43/100

  moby/buildkit#7409 · Opened Nov 11, 2026

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• Swarm: two running tasks in the same slot of replicas=1 services after two successive leader changes

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  area/swarm kind/bug version/29.1

  Difficulty 5/5 Over a week Newbie friendliness 35/100

  moby/moby#54179 · Opened Nov 11, 2026

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• Image exported from `Merge(base, Diff(base, base.Run(...)))` intermittently loses its base layers when pulled again on the same daemon (`stat /bin/sh: no such file or directory`)

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  moby/buildkit#7403 · Opened Nov 10, 2026

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• Trivial build re-extracts pulled base layers on Docker 29.9.2

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  area/builder/buildkit kind/bug version/29.9

  Difficulty 5/5 Over a week Newbie friendliness 18/100

  moby/moby#54164 · 2 comments · Opened Nov 9, 2026

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• Rootless: "failed to restore thread's network namespace" warning logged for every external DNS lookup from a container on a user-defined network

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  area/rootless kind/bug kind/regression

  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  moby/moby#54162 · 2 comments · Opened Nov 9, 2026

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• [DinD] Failed to mount /tmp/containerd-mount1888648785

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  area/ux kind/bug kind/question version/29.9

  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  moby/moby#54156 · 5 comments · Opened Nov 9, 2026

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• mount: "bind" with recursive propagation (rprivate/rslave/rshared) performs a recursive bind (rbind)

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  Difficulty 4/5 1-2 days Newbie friendliness 48/100

  moby/sys#279 · Opened Nov 6, 2026

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• Dockerfile: COPY --link --from=<stage> / / copies the stage instead of merging its snapshot

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  Difficulty 4/5 3-5 days Newbie friendliness 43/100

  moby/buildkit#7375 · 3 comments · Opened Nov 5, 2026

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• Warm `mode=max` cache export reloads every imported record (profile attached)

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/buildkit#7370 · 1 comment · Opened Nov 4, 2026

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• Swarm manager deadlock: updater waits in DelayStart while holding the store lock; every write then times out

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  moby/moby#54128 · Opened Nov 4, 2026

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• dockerd 29.9.2 crashes with SIGSEGV (fatal error: fault) in buildkit cache GC — cacheManager.DiskUsage → mapaccess1_faststr

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  area/builder/buildkit kind/bug version/29.9

  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  moby/moby#54122 · Opened Nov 4, 2026

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• docker-default denies signals between a container's own processes when Ubuntu stacks the profile (`docker-default//&unconfined`)

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  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  moby/moby#54099 · 4 comments · 6 reactions · Opened Nov 2, 2026

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• Automatic host-port allocation fails after ten occupied host-listener candidates despite free range

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  Difficulty 4/5 3-5 days Newbie friendliness 62/100

  moby/moby#54079 · 1 comment · Opened Oct 30, 2026

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• [BUG] Existing user-defined bridge interfaces lose IPv4 gateway addresses while Docker network metadata remains intact

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  kind/bug

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  moby/moby#54073 · Opened Oct 30, 2026

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• `unless-stopped` containers are not restarted after dockerd exits uncleanly: restore() marks the containers it stops as manually stopped

  May be free again @akasakariko claimed this 12 days ago, and no pull request is open. Open

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  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  moby/moby#54065 · 3 comments · Opened Oct 29, 2026

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• Moby v30 Planning

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  Difficulty 5/5 Over a week Newbie friendliness 15/100

  moby/moby#54007 · 1 comment · Opened Oct 22, 2026

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• Rootless (slirp4netns + builtin port driver): long-lived RTSP/TCP streams stall intermittently after 29.9.0 → 29.9.2

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  area/rootless kind/bug status/more-info-needed version/29.9

  Difficulty 4/5 3-5 days Newbie friendliness 40/100

  moby/moby#54004 · 3 comments · Opened Oct 22, 2026

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• force-compression=true fails with "failed to get compression blob" on zstd layers labelled gzip

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  status/triage

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/buildkit#7308 · 3 comments · Opened Oct 21, 2026

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• flaky test: TestClientGatewayContainerExecPipeRelease

  May be free again A pull request for this issue was closed without being merged. Open

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  area/testing

  Difficulty 3/5 1-2 days Newbie friendliness 55/100

  moby/buildkit#7301 · Opened Oct 19, 2026

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• COPY --chown silently falls back to root

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  moby/buildkit#7292 · 2 comments · Opened Oct 16, 2026

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• Per-step resource limits are silently ignored in rootless mode, even with cgroup v2 delegated

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  area/rootless kind/enhancement

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  moby/buildkit#7287 · 3 comments · Opened Oct 15, 2026

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• Docker 29.9.1: specific-host-IP port bindings and ports on `internal` networks are silently not wired (kernel 7.0.0)

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  moby/moby#53960 · 2 comments · Opened Oct 15, 2026

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• Possible memory leak in mount on OpenBSD: C strings passed to mount(2) are never freed

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  Difficulty 2/5 1-3 hours Newbie friendliness 62/100

  moby/sys#263 · Opened Oct 15, 2026

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• c8d: every docker build leaks containerd leases (gc.flat + buildkit -variants/-view), causing unbounded snapshot/content growth

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  area/builder area/builder/buildkit containerd-integration status/more-info-needed version/29.1

  Difficulty 5/5 Over a week Newbie friendliness 12/100

  moby/moby#53959 · 3 comments · Opened Oct 15, 2026

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• Fully define and document what a "dangling" image is

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  area/images help wanted

  Difficulty 3/5 1-2 days Newbie friendliness 40/100

  moby/moby#53941 · 3 comments · Opened Oct 14, 2026

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• ~6/7 times GitHub Actions cache fails with `ERROR CODE: BlobNotFound`

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  status/triage

  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  moby/buildkit#7283 · 2 comments · 1 reaction · Opened Oct 14, 2026

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• Daemon-wide hang: stuck blob pushes exhaust the per-registry limiter and block the scheduler loop

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  moby/buildkit#7275 · 3 comments · Opened Oct 13, 2026

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• solver: build fails with "failed to get state for index" after another build sharing its steps is canceled

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  Difficulty 4/5 1-2 days Newbie friendliness 25/100

  moby/buildkit#7268 · 1 comment · Opened Oct 11, 2026

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• swarm: task update cancelling Prepare during container create is logged as "fatal task error" ("Canceled: context canceled"), task REJECTED, update rolled back

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  kind/bug

  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  moby/moby#53916 · Opened Oct 10, 2026

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• custom selector like `--platform`

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  kind/feature status/more-info-needed

  Difficulty 5/5 Over a week Newbie friendliness 35/100

  moby/moby#53909 · 2 comments · Opened Oct 10, 2026

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• `COPY` with an empty variable unexpectedly copies the entire build context

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  moby/buildkit#7261 · 6 comments · Opened Oct 9, 2026

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• Allow customizing the configuration of the managed/embedded containerd instance

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  containerd-integration kind/feature version/29.9

  Difficulty 5/5 Over a week Newbie friendliness 12/100

  moby/moby#53900 · 4 comments · Opened Oct 9, 2026

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• containerd image store: Lazily pulled images may lack full layer content with remote snapshotters

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  containerd-integration

  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  moby/moby#53878 · Opened Oct 7, 2026

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• proposal: opt-in Git LFS support for Git sources

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  area/source needs/maintainer-decision

  Difficulty 5/5 Over a week Newbie friendliness 30/100

  moby/buildkit#7241 · Opened Oct 2, 2026

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• extpoints/storage: Figure out lifecycle / gc

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  area/extensions

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  moby/moby#53828 · Opened Sep 30, 2026

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• docker pull/push rejects IPv6 link-local literal with zone ID ([fe80::...%eth0]:5000/image): "invalid reference format"

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  kind/bug

  Difficulty 4/5 3-5 days Newbie friendliness 68/100

  moby/moby#53816 · 2 comments · Opened Sep 30, 2026

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• docker cp copy-out can write outside the destination (strings.HasPrefix path containment + walk/extract symlink race)

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  status/needs-reproduction

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  moby/moby#53792 · 1 comment · Opened Sep 27, 2026

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• Any prune that removes a record makes the next build uncached when the base image was pulled by the engine (Prune calls ReleaseUnreferenced with a canceled context)

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  moby/buildkit#7193 · 2 comments · Opened Sep 25, 2026

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• Provides PowerShell 7 scripts for compiling and installing Moby on Windows ARM64

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  kind/feature

  Difficulty 3/5 1-2 days Newbie friendliness 65/100

  moby/moby#53761 · Opened Sep 23, 2026

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• proxy network: pip/requests and Node.js fail TLS verification because no CA env vars are injected

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  Difficulty 3/5 1-2 days Newbie friendliness 65/100

  moby/buildkit#7186 · 4 comments · Opened Sep 23, 2026

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• proxy network: injected CA is wiped when a build step upgrades the ca-certificates package

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  moby/buildkit#7185 · 1 comment · Opened Sep 23, 2026

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• buildkitd retains ~16M live objects (~1.3 GB heap) after builds; only a restart releases it (v0.33.0, OCI worker)

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  moby/buildkit#7181 · 2 comments · 1 reaction · Opened Sep 21, 2026

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• dockerd panics (SIGSEGV) in health-check monitor: nil reflect rtype in Container.CommitInMemory

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  Difficulty 5/5 Over a week Newbie friendliness 30/100

  moby/moby#53734 · Opened Sep 20, 2026

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• solver: ReleaseUnreferenced can hold the cache.db write lock for extended periods under sustained load

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/buildkit#7175 · Opened Sep 19, 2026

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• docker prune cmd cleaned up image tags while it is still being used by a container

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  kind/bug

  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  moby/moby#53706 · 2 comments · Opened Sep 17, 2026

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• docker exec -it injects a stray NUL byte into the output stream

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/moby#53701 · 2 comments · Opened Sep 16, 2026

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• Docker daemon seems to conflict with networkmanager hotspot routing

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  area/networking kind/bug version/29.8

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  moby/moby#53686 · 1 comment · Opened Sep 15, 2026

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• CI: de-DINDify

  May be free again @Rayan-and-beyond claimed this 54 days ago, and no pull request is open. Open

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  area/testing exp/expert

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  moby/moby#53670 · 3 comments · 1 reaction · Opened Sep 14, 2026

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