Retire builder: the build machine is the build-agent on every machine (hq ADR 0190) #236

Merged
mesh-admin merged 1 commits from feat/retire-builder into main 2026-10-03 09:44:09 +00:00
2 changed files with 0 additions and 113 deletions
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ARG GO_BASE
ARG ALPINE_BASE
# builder's own image: the build machine itself, compiled into a container.
#
# **The source is not vendored here.** builder's actual code — cmd/mesh-builder, internal/builder,
# internal/catalogue — lives in the mesh-controller repository, the same control plane it is one
# half of. This module ships the packaging, not a second copy of the source, so the build context
# is the mesh-controller repository root (declared under build.artifacts[].context), and this
# Dockerfile compiles ./cmd/mesh-builder from it — the same shape route-proxy already uses for the
# same reason.
FROM ${GO_BASE} AS build
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -o /mesh-builder ./cmd/mesh-builder
# Unlike mesh-controller's own FROM scratch (ADR 0006: nothing to audit but one binary), the build
# machine's whole job is shelling out to git and docker — it needs a real userland to do that in,
# not a second copy of either tool vendored into this image. apk installs both from the base's own
# packages, not fetched on its own at build time.
FROM ${ALPINE_BASE}
RUN apk add --no-cache docker-cli git
COPY --from=build /mesh-builder /usr/local/bin/mesh-builder
ENTRYPOINT ["/usr/local/bin/mesh-builder"]
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{
"module": "builder",
"version": "1",
"capabilities": [
"container-runtime"
],
"claims": [
{
"name": "mesh-build-machine",
"scope": "mesh"
}
],
"requires": [
"artifact-store",
"npm-package-registry"
],
"binds": {
"npm-package-registry": "${dir:mesh-state}/package-registry.json"
},
"secrets": {
"npm-package-registry": "${dir:mesh-state}/package-registry.secret"
},
"own-secrets": {
"broker": "${dir:mesh-state}/broker"
},
"resources": [
{
"id": "mesh-state",
"type": "directory",
"mode": "0700",
"place": "mesh"
},
{
"id": "workspace",
"type": "directory",
"mode": "0700"
},
{
"id": "builder-env",
"type": "file",
"path": "${dir:mesh-state}/builder.env",
"mode": "0600",
"content": "MESH_BROKER_FILE=/run/mesh/broker\nMESH_NODE=${machine:name}\nMESH_REGISTRY=${bound:artifact-store:at}:${bound:artifact-store:port}\nMESH_PACKAGE_BINDING=/run/mesh/package-registry.json\nMESH_NPM_TOKEN_FILE=/run/mesh/package-registry.secret\nMESH_WORKSPACE=${dir:workspace}\n"
},
{
"id": "server",
"type": "container",
"name": "mesh-builder",
"artifact": "server",
"env-file": [
"${dir:mesh-state}/builder.env"
],
"volumes": [
"${dir:mesh-state}:/run/mesh:ro",
"${dir:workspace}:${dir:workspace}",
"/var/run/docker.sock:/var/run/docker.sock"
],
"restart-on": [
"builder-env"
],
"network": "host"
}
],
"build": {
"artifacts": [
{
"name": "server",
"kind": "image",
"from": "Dockerfile",
"context": {
"seat": "git",
"repository": "novox/mesh-controller",
"ref": "main"
}
}
],
"on": [
{
"arg": "GO_BASE",
"image": "golang@sha256:8ac98ca534ac3f51e1f420a1dd2c15e74c75cfa0f23f3ad27eb5d7236c349a0c"
},
{
"arg": "ALPINE_BASE",
"image": "alpine@sha256:d9e853e87e55526f6b2917df91a2115c36dd7c696a35be12163d44e6e2a4b6bc"
}
]
}
}