2026-05-30 07:47.47: New job: Build using linux-x86_64 in
                                []
2026-05-30 07:47.47: Will push staging image to ocurrent/opam-staging:alpine-3.23-ocaml-5.3-amd64

Dockerfile:

# syntax=docker/dockerfile:1

FROM ocurrent/opam-staging@sha256:ffcdae06ed062c4db3409437a34a35bb0765470a68315cda84e21b72842f4021
ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
USER root
RUN apk update && apk upgrade
RUN apk add zstd
USER opam
RUN opam switch create 5.3 --packages=ocaml-base-compiler.5.3.0
RUN opam pin add -k version ocaml-base-compiler 5.3.0
RUN opam install -y opam-depext
ENTRYPOINT [ "opam", "exec", "--" ]
CMD bash
COPY --link [ "Dockerfile", "/Dockerfile.ocaml" ]


2026-05-30 07:47.47: Using cache hint "5.3.0-amd64-ocurrent/opam-staging@sha256:ffcdae06ed062c4db3409437a34a35bb0765470a68315cda84e21b72842f4021"
2026-05-30 15:50.25: Waiting for worker…
2026-05-30 15:50.25: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
WARNING: experimental flag squash is removed with BuildKit. You should squash inside build using a multi-stage Dockerfile for efficiency.
#0 building with "default" instance using docker driver

#1 [internal] load build definition from Dockerfile
#1 transferring dockerfile: 568B done
#1 DONE 0.0s

#2 resolve image config for docker-image://docker.io/docker/dockerfile:1
#2 DONE 0.5s

#3 docker-image://docker.io/docker/dockerfile:1@sha256:87999aa3d42bdc6bea60565083ee17e86d1f3339802f543c0d03998580f9cb89
#3 CACHED

#4 [internal] load metadata for docker.io/ocurrent/opam-staging@sha256:ffcdae06ed062c4db3409437a34a35bb0765470a68315cda84e21b72842f4021
#4 DONE 0.0s

#5 [internal] load .dockerignore
#5 transferring context: 2B done
#5 DONE 0.0s

#6 [1/7] FROM docker.io/ocurrent/opam-staging@sha256:ffcdae06ed062c4db3409437a34a35bb0765470a68315cda84e21b72842f4021
#6 DONE 0.0s

#7 [2/7] RUN apk update && apk upgrade
#7 CACHED

#8 [3/7] RUN apk add zstd
#8 CACHED

#9 [internal] load build context
#9 transferring context: 568B done
#9 DONE 0.0s

#10 [4/7] RUN opam switch create 5.3 --packages=ocaml-base-compiler.5.3.0
#10 0.685 
#10 0.685 <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
#10 0.685 Switch invariant: ["ocaml-base-compiler" {= "5.3.0"}]
#10 6.154 
#10 6.154 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#10 10.22 -> installed base-bigarray.base
#10 10.22 -> installed base-threads.base
#10 10.22 -> installed base-unix.base
#10 10.22 -> installed ocaml-options-vanilla.1
#10 10.49 -> retrieved ocaml-config.3  (2 extra sources)
#10 11.66 -> retrieved ocaml-compiler.5.3.0  (https://opam.ocaml.org/cache)
#10 129.4 -> installed ocaml-compiler.5.3.0
#10 129.4 -> installed ocaml-base-compiler.5.3.0
#10 129.4 -> installed ocaml-config.3
#10 129.5 -> installed ocaml.5.3.0
#10 129.5 -> installed base-domains.base
#10 129.5 -> installed base-effects.base
#10 129.5 -> installed base-nnp.base
#10 129.9 Done.
#10 129.9 # Run eval $(opam env --switch=5.3) to update the current shell environment
#10 DONE 132.9s

#11 [5/7] RUN opam pin add -k version ocaml-base-compiler 5.3.0
#11 0.623 ocaml-base-compiler is now pinned to version 5.3.0
#11 0.623 
#11 6.280 No package build needed.
#11 6.280 Nothing to do.
#11 6.286 # Run eval $(opam env) to update the current shell environment
#11 DONE 6.3s

#12 [6/7] RUN opam install -y opam-depext
#12 6.051 The following actions will be performed:
#12 6.051   - install opam-depext 1.2.3
#12 6.051 
#12 6.051 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#12 6.296 -> retrieved opam-depext.1.2.3  (https://opam.ocaml.org/cache)
#12 11.39 -> installed opam-depext.1.2.3
#12 11.40 Done.
#12 11.40 
#12 11.40 <><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
#12 11.40 => opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
#12 11.41 # Run eval $(opam env) to update the current shell environment
#12 DONE 13.0s

#13 [7/7] COPY --link [ Dockerfile, /Dockerfile.ocaml ]
#13 DONE 0.0s

#14 exporting to image
#14 exporting layers
#14 exporting layers 6.0s done
#14 writing image sha256:e91834393a6fe9a8338fe4254b918ea91bcafe8305327315f81c109913c137e5 done
#14 DONE 6.0s

 1 warning found (use docker --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 13)
Pushing "sha256:e91834393a6fe9a8338fe4254b918ea91bcafe8305327315f81c109913c137e5" to "ocurrent/opam-staging:alpine-3.23-ocaml-5.3-amd64" as user "ocurrentbuilder"
Login Succeeded
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alpine-3.23-ocaml-5.3-amd64: digest: sha256:d5e6b3050b3739be27f73feb7097ba3174333bb78bc1894585033692b58ccd7f size: 9082
The push refers to repository [docker.io/ocurrent/opam-staging]
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Job succeeded
2026-05-30 15:54.20: Job succeeded