Add locust-otel Docker image with OpenTelemetry dependencies#3379
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cyberw merged 4 commits intolocustio:masterfrom Mar 22, 2026
Merged
Add locust-otel Docker image with OpenTelemetry dependencies#3379cyberw merged 4 commits intolocustio:masterfrom
cyberw merged 4 commits intolocustio:masterfrom
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Add Dockerfile.otel based on Dockerfile.ci that installs locust[otel] extras. Add CI jobs to test and publish the image to the locustio/locust-otel Docker Hub repository. Fixes locustio#3309
cyberw
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Mar 21, 2026
docs/running-in-docker.rst
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Niiice! Would it be possible to chain the build to reduce duplication? So the other file becomes just something like this (not tested) FROM locustio/locust |
Reduce duplication by building Dockerfile.otel on top of the base locust image instead of repeating all build steps from Dockerfile.ci. The OTEL image now uses a build arg (BASE_IMAGE) so CI can point it at the locally built or just-published base image. The publish job depends on publish-docker to guarantee the base image exists.
The Buildx builder runs inside an isolated BuildKit container that cannot see images loaded into the host Docker daemon via load: true. Use plain docker build for the OTel image so it can resolve the locally-built base image directly.
The dedicated locustio/locust-otel image covers this now.
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@cyberw The Dockerfile already chains from the base image. It does FROM ${BASE_IMAGE} and installs the wheel with [otel] extras on top. The COPY ./dist is needed because the wheel isn't on PyPI at build time. Fixed the CI failure and removed the otel line from the base image example. The otel build was using Buildx, which runs in an isolated BuildKit container that can't see images loaded into the host Docker daemon via load: true. Switched to plain docker build for that step. |
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The official Docker image does not include the OpenTelemetry exporter libraries, so running with
--otelfails with an import error.Added a
Dockerfile.otelthat installs the[otel]extras and publishes a separatelocustio/locust-otelimage. A CI test job verifies the OTel packages import correctly before publish.Fixes #3309