Build Metadata

Overview

migetpacks records who built an image and from which commit, then exposes that on four surfaces:

Each field resolves by precedence, highest first:

The build-meta input envelope (set by the platform).
MIGET_GIT_* or SOURCE_VERSION environment variables, for standalone docker run or CI builds.
.git autodetection of the source directory.

Unknown fields are omitted rather than set to empty strings.

Label	Value
`org.opencontainers.image.revision`	Full commit SHA
`org.opencontainers.image.source`	Repository URL
`org.opencontainers.image.created`	Build time (ISO 8601)
`com.miget.git.branch`	Branch
`com.miget.git.description`	Commit subject
`com.miget.builder.version`	migetpacks version

docker inspect my-app:latest --format '{{json .Config.Labels}}'

Buildpack builds include /.miget/build.json, useful when you prefer a file over environment variables or run a distroless image with no shell:

docker run --rm my-app:latest cat /.miget/build.json

migetpacks does not modify a Dockerfile it does not own, so it passes the values as build args. Opt in from your Dockerfile:

ARG MIGET_GIT_COMMIT
ENV MIGET_GIT_COMMIT=${MIGET_GIT_COMMIT}