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https://github.com/shankar0123/certctl.git
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shankar0123
672e1d991d
Addresses Medium finding M-4 in the audit report. The multi-stage
Dockerfiles previously had no ARG declarations for HTTP_PROXY,
HTTPS_PROXY, or NO_PROXY, so corporate-proxy environments silently
failed at 'npm ci' (frontend stage) and 'go mod download' (Go builder).
The npm retry idiom (`npm ci --include=dev || npm ci --include=dev`)
masked the failure because the upstream 'Exit handler never called!'
bug exits 0 despite the install crash.
Fix: thread HTTP_PROXY / HTTPS_PROXY / NO_PROXY ARGs through every
Docker build stage that performs network I/O, re-export them as ENV
with both upper- and lower-case aliases (apk/curl/npm read lowercase;
Go/Node read uppercase), and forward the host shell's environment via
`build.args:` in every compose file and `build-args:` in the release
workflow's docker/build-push-action steps. Defaults are empty strings
so un-proxied builds remain byte-identical to the pre-fix tree.
Scope: Dockerfile (frontend + Go builder stages), Dockerfile.agent
(Go builder stage), deploy/docker-compose.yml (server + agent),
deploy/docker-compose.dev.yml (server + agent), deploy/docker-compose.test.yml
(server + agent), .github/workflows/release.yml (both docker/build-push-action
v6 invocations). Zero Go, web, test, or runtime code changes. Zero
base-image changes. Existing npm `||` retry idiom and `ARG TARGETARCH`
preserved verbatim.
CWE-1173 (Improper Use of Validated Input) / CWE-16 (Configuration).
Verification:
- YAML parses clean across all four compose files and release.yml.
- yamllint -d relaxed: clean exit across all five YAML files.
- All six `build.args:` blocks expose HTTP_PROXY, HTTPS_PROXY, NO_PROXY
with default-empty ${VAR:-} substitution.
- Both release.yml docker/build-push-action steps expose the same
three keys sourced from ${{ secrets.HTTP_PROXY }}, etc.
- Dockerfiles contain 5 proxy ARG declarations total (Dockerfile has 2
stages × 3 ARGs = 6 lines, Dockerfile.agent has 1 stage × 3 ARGs = 3
lines); lowercase ENV aliases verified present in every stage.
- git diff --shortstat: 6 files changed, 117 insertions(+), 0 deletions.
Pure additive.
Docker-live verification (`docker build`, `docker compose config`)
deferred to CI / post-commit smoke because the sandbox has no Docker
runtime. hadolint, go, golangci-lint, govulncheck likewise unavailable
in the sandbox; per-layer CI coverage gates (service 55%, handler 60%,
domain 40%, middleware 30%) are trivially unaffected as M-4 touches
zero Go source files.
55 lines
1.3 KiB
Docker
55 lines
1.3 KiB
Docker
# Multi-stage build for certctl agent
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# Stage 1: Build
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FROM golang:1.25-alpine AS builder
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# Proxy propagation (M-4, Issue #9) — defaulted to empty so un-proxied builds
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# behave identically to the pre-fix tree. When `HTTP_PROXY`/`HTTPS_PROXY`/
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# `NO_PROXY` are forwarded via `docker build --build-arg` (or compose
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# `build.args`), they are re-exported as ENV with both upper- and lower-case
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# names because apk and curl read the lowercase variants while Go reads the
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# uppercase ones.
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ARG HTTP_PROXY=
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ARG HTTPS_PROXY=
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ARG NO_PROXY=
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ENV HTTP_PROXY=${HTTP_PROXY} \
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HTTPS_PROXY=${HTTPS_PROXY} \
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NO_PROXY=${NO_PROXY} \
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http_proxy=${HTTP_PROXY} \
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https_proxy=${HTTPS_PROXY} \
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no_proxy=${NO_PROXY}
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RUN apk add --no-cache git ca-certificates
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WORKDIR /app
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COPY go.mod go.sum ./
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RUN go mod download
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COPY . .
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ARG TARGETARCH=amd64
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RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build \
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-ldflags="-w -s" \
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-o bin/agent \
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./cmd/agent
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# Stage 2: Runtime
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FROM alpine:3.19
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RUN apk add --no-cache ca-certificates curl
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RUN addgroup -g 1000 certctl && \
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adduser -D -u 1000 -G certctl certctl
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WORKDIR /app
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COPY --from=builder /app/bin/agent .
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# Create key storage directory for agent-side keygen
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RUN mkdir -p /var/lib/certctl/keys && \
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chown -R certctl:certctl /app /var/lib/certctl
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USER certctl
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ENTRYPOINT ["/app/agent"]
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