Pin container versions and add uniform CONTAINER_APP_VERSION

Every container Dockerfile now declares ARG CONTAINER_APP_VERSION=X.Y.Z
as the first ARG, enabling uniform version parsing for the sync check.
Containers that use the version in build commands chain it to a semantic
ARG (e.g., ARG NAVIDROME_VERSION=${CONTAINER_APP_VERSION}).

Version sources:
- cv: 1.0.3 (latest Forgejo generic package release)
- quartz: 1.28.2 (nginx stable, pinned FROM tag)
- devpi: 6.19.1 / 5.0.1 (devpi-server + devpi-web from PyPI)
- nettest: 0.1.0 (internal, no upstream)
- All others: existing versions carried forward

Mark pin-container-versions Mikado card as complete.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

containers/cv/Dockerfile

@@ -6,6 +6,8 @@
 #
 # The container downloads the tarball on startup, extracts it, and serves with nginx.
 
+ARG CONTAINER_APP_VERSION=1.0.3
+
 FROM nginx:alpine
 
 # Install curl for downloading release assets

containers/devpi/Dockerfile

@@ -1,7 +1,15 @@
+ARG CONTAINER_APP_VERSION=6.19.1
+
 FROM python:3.12-slim
 
+ARG CONTAINER_APP_VERSION
+ARG DEVPI_SERVER_VERSION=${CONTAINER_APP_VERSION}
+ARG DEVPI_WEB_VERSION=5.0.1
+
 # Install devpi-server and devpi-web
-RUN pip install --no-cache-dir devpi-server devpi-web
+RUN pip install --no-cache-dir \
+    devpi-server==${DEVPI_SERVER_VERSION} \
+    devpi-web==${DEVPI_WEB_VERSION}
 
 # Create non-root user
 RUN useradd -r -u 1000 devpi && mkdir -p /devpi && chown devpi:devpi /devpi

containers/forgejo-runner/Dockerfile

@@ -9,9 +9,13 @@
 # Usage: Configure runner with label like:
 #   docker:docker://registry.ops.eblu.me/blumeops/forgejo-runner:latest
 
+ARG CONTAINER_APP_VERSION=0.19.11
+
 FROM debian:bookworm-slim
 
 ARG TARGETARCH
+ARG CONTAINER_APP_VERSION
+ARG DAGGER_VERSION=${CONTAINER_APP_VERSION}
 
 # Install base dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -51,7 +55,6 @@ RUN ARCH="${TARGETARCH:-$(dpkg --print-architecture)}" \
     && argocd version --client
 
 # Install Dagger CLI (for running Dagger CI pipelines)
-ARG DAGGER_VERSION=0.19.11
 RUN ARCH="${TARGETARCH:-$(dpkg --print-architecture)}" \
     && curl -fsSL -o /tmp/dagger.tar.gz \
     "https://dl.dagger.io/dagger/releases/${DAGGER_VERSION}/dagger_v${DAGGER_VERSION}_linux_${ARCH}.tar.gz" \

containers/homepage/Dockerfile

@@ -1,7 +1,8 @@
 # Homepage - self-hosted services dashboard
 # Two-stage build: Node.js build, Alpine runtime
 
-ARG HOMEPAGE_VERSION=v1.10.1
+ARG CONTAINER_APP_VERSION=v1.10.1
+ARG HOMEPAGE_VERSION=${CONTAINER_APP_VERSION}
 
 FROM node:24-slim AS builder
 

containers/kiwix-serve/Dockerfile

@@ -1,10 +1,13 @@
 # kiwix-serve container
 # Downloads pre-built binary from kiwix mirror
 
+ARG CONTAINER_APP_VERSION=3.8.1
+
 FROM alpine:3.22
 
 ARG TARGETPLATFORM
-ARG KIWIX_VERSION=3.8.1
+ARG CONTAINER_APP_VERSION
+ARG KIWIX_VERSION=${CONTAINER_APP_VERSION}
 
 RUN set -e && \
     apk --no-cache add dumb-init curl && \

containers/kubectl/Dockerfile

@@ -1,10 +1,13 @@
 # Minimal kubectl container
 # Multi-arch build: downloads correct binary for target platform
 
+ARG CONTAINER_APP_VERSION=v1.34.4
+
 FROM alpine:3.22 AS downloader
 
 ARG TARGETARCH
-ARG KUBECTL_VERSION=v1.34.4
+ARG CONTAINER_APP_VERSION
+ARG KUBECTL_VERSION=${CONTAINER_APP_VERSION}
 
 RUN apk add --no-cache curl && \
     # Detect architecture - use TARGETARCH if set, otherwise detect from uname

containers/miniflux/Dockerfile

@@ -1,7 +1,8 @@
 # Miniflux RSS feed reader
 # Based on upstream packaging/docker/alpine/Dockerfile
 
-ARG MINIFLUX_VERSION=2.2.17
+ARG CONTAINER_APP_VERSION=2.2.17
+ARG MINIFLUX_VERSION=${CONTAINER_APP_VERSION}
 
 FROM golang:alpine3.22 AS build
 

containers/navidrome/Dockerfile

@@ -1,7 +1,8 @@
 # Navidrome music server
 # Three-stage build: UI (Node), backend (Go+taglib), runtime (Alpine)
 
-ARG NAVIDROME_VERSION=v0.60.3
+ARG CONTAINER_APP_VERSION=v0.60.3
+ARG NAVIDROME_VERSION=${CONTAINER_APP_VERSION}
 
 FROM node:22-alpine AS ui-build
 

containers/nettest/Dockerfile

@@ -4,6 +4,8 @@
 # - Docker on indri (during CI build)
 # - Minikube pods (manual testing)
 
+ARG CONTAINER_APP_VERSION=0.1.0
+
 FROM alpine:3.22
 
 RUN apk add --no-cache \

containers/ntfy/Dockerfile

@@ -1,7 +1,8 @@
 # ntfy push notification server
 # Three-stage build: Web UI (Node), server (Go+SQLite), runtime (Alpine)
 
-ARG NTFY_VERSION=v2.17.0
+ARG CONTAINER_APP_VERSION=v2.17.0
+ARG NTFY_VERSION=${CONTAINER_APP_VERSION}
 ARG NTFY_COMMIT=a03a37feb1869e84e3af0dd6190bdc7183f211ec
 
 FROM node:22-alpine AS web-build

containers/quartz/Dockerfile

@@ -6,7 +6,10 @@
 #
 # The container downloads the tarball on startup, extracts it, and serves with nginx.
 
-FROM nginx:alpine
+ARG CONTAINER_APP_VERSION=1.28.2
+ARG NGINX_VERSION=${CONTAINER_APP_VERSION}
+
+FROM nginx:${NGINX_VERSION}-alpine
 
 # Install curl for downloading release assets
 RUN apk add --no-cache curl

containers/teslamate/Dockerfile

@@ -1,7 +1,8 @@
 # TeslaMate - Tesla data logger
 # Based on upstream Dockerfile
 
-ARG TESLAMATE_VERSION=v2.2.0
+ARG CONTAINER_APP_VERSION=v2.2.0
+ARG TESLAMATE_VERSION=${CONTAINER_APP_VERSION}
 
 FROM elixir:1.18-otp-26 AS builder
 

containers/transmission/Dockerfile

@@ -1,9 +1,12 @@
 # Transmission BitTorrent daemon
 # Simpler alternative to linuxserver image
 
+ARG CONTAINER_APP_VERSION=4.0.6-r4
+
 FROM alpine:3.22
 
-ARG TRANSMISSION_VERSION=4.0.6-r4
+ARG CONTAINER_APP_VERSION
+ARG TRANSMISSION_VERSION=${CONTAINER_APP_VERSION}
 
 RUN apk add --no-cache \
     transmission-daemon=${TRANSMISSION_VERSION} \

docs/how-to/zot/add-container-version-sync-check.md

@@ -26,13 +26,13 @@ Discovered during analysis of [[adopt-commit-based-container-tags]]: the new com
 
 A uv-script mise task that validates version consistency across sources:
 
-1. **Dockerfile ARG** — parse `ARG <NAME>_VERSION=<value>` (strip `v` prefix if present). This is the primary version declaration for Dockerfile containers.
+1. **Dockerfile ARG** — parse `ARG CONTAINER_APP_VERSION=<value>` (strip `v` prefix if present). Every container Dockerfile declares this as its canonical version.
 2. **`service-versions.yaml`** — `current-version` field for the matching service name (strip `v` prefix). Must agree with the Dockerfile ARG.
 3. **Nix derivation** — for nix-only containers (authentik), extract the version via `dagger call nix-version` (from [[add-dagger-nix-build]]). For dual containers (nettest, ntfy), the Dockerfile ARG is the primary check target; the nix version is informational.
 
 The check also validates:
 - Every `hybrid` service in `service-versions.yaml` has a non-null `current-version`
-- Every container with a Dockerfile has a parseable `*_VERSION` ARG (after [[pin-container-versions]] is complete)
+- Every container with a Dockerfile has a parseable `CONTAINER_APP_VERSION` ARG (after [[pin-container-versions]] is complete)
 
 Report mismatches as errors. Exit non-zero if any are found.
 
@@ -57,7 +57,7 @@ Fill in `current-version` for all hybrid services that currently have `null`. Th
 
 The CI workflow (from [[adopt-commit-based-container-tags]]) extracts the version at build time — no VERSION file needed:
 
-- **Dockerfile builds**: `grep -oP 'ARG \w+_VERSION=\K\S+' containers/$CONTAINER/Dockerfile | head -1`
+- **Dockerfile builds**: `grep -oP 'ARG CONTAINER_APP_VERSION=\K\S+' containers/$CONTAINER/Dockerfile`
 - **Nix builds**: `dagger call nix-version --src=. --package=<pkg>` or `nix eval --raw nixpkgs#<pkg>.version`
 
 ## Key Files

docs/how-to/zot/adopt-commit-based-container-tags.md

@@ -39,7 +39,7 @@ Both the Dockerfile and Nix workflows fire for each trigger, each bailing out if
 
 Each container's version is extracted at build time from existing declarations — no separate VERSION file:
 
-- **Dockerfile builds**: parsed from `ARG <NAME>_VERSION=<value>` in the Dockerfile
+- **Dockerfile builds**: parsed from `ARG CONTAINER_APP_VERSION=<value>` in the Dockerfile
 - **Nix builds**: extracted via `dagger call nix-version` or `nix eval`
 
 The [[add-container-version-sync-check]] pre-commit check ensures these declarations stay in sync with `service-versions.yaml`. See [[pin-container-versions]] for the work to ensure every container has a parseable version.

docs/how-to/zot/pin-container-versions.md

@@ -1,7 +1,6 @@
 ---
 title: Pin Container Versions
 modified: 2026-02-20
-status: active
 tags:
   - how-to
   - containers
@@ -15,69 +14,38 @@ Ensure every container has an explicit, parseable version declaration so that [[
 
 ## Context
 
-Discovered during analysis of [[adopt-commit-based-container-tags]]: most containers already have version ARGs (miniflux, navidrome, ntfy, etc.), but several do not. Without explicit versions in the build files, there is nothing for a VERSION file to sync against.
+Discovered during analysis of [[adopt-commit-based-container-tags]]: containers needed a uniform, parseable version declaration for the sync check. Most containers already had version ARGs (miniflux, navidrome, ntfy, etc.), but with inconsistent naming (`NAVIDROME_VERSION`, `MINIFLUX_VERSION`, etc.), and several containers (devpi, cv, quartz, nettest) had none.
 
-## Containers Needing Work
+## What Was Done
 
-### devpi — Pin pip dependencies
-
-Currently installs `devpi-server` and `devpi-web` without version pins:
+Every container Dockerfile now declares `ARG CONTAINER_APP_VERSION=X.Y.Z` as its first ARG, providing a uniform parsing target. Containers that use the version in build commands chain it to a semantic ARG:
 
 ```dockerfile
-RUN pip install --no-cache-dir devpi-server devpi-web
+ARG CONTAINER_APP_VERSION=v0.60.3
+ARG NAVIDROME_VERSION=${CONTAINER_APP_VERSION}
 ```
 
-Add version ARGs and pin:
-
-```dockerfile
-ARG DEVPI_SERVER_VERSION=6.12.1
-ARG DEVPI_WEB_VERSION=4.2.2
-RUN pip install --no-cache-dir \
-    devpi-server==${DEVPI_SERVER_VERSION} \
-    devpi-web==${DEVPI_WEB_VERSION}
-```
-
-The VERSION file will track `devpi-server` as the primary version.
-
-### cv — Add internal version ARG
-
-Thin nginx wrapper that downloads content at runtime. No upstream app to track — the version reflects the container definition itself:
-
-```dockerfile
-ARG CV_VERSION=0.1.0
-```
-
-Bump when the Dockerfile or scripts change.
-
-### quartz — Add internal version ARG
-
-Same pattern as cv:
-
-```dockerfile
-ARG QUARTZ_VERSION=0.1.0
-```
-
-### nettest — Already handled
-
-Utility container with no upstream. Will use `0.1.0` in VERSION file. No Dockerfile ARG needed since there's nothing to pin — the Dockerfile just installs Alpine packages at whatever version Alpine ships. The sync check can skip the Dockerfile ARG validation for containers without a `*_VERSION` ARG.
-
-### forgejo-runner — Already handled
-
-Has `ARG DAGGER_VERSION=0.19.11` as its primary version. Good enough.
+Specific changes:
+- **devpi**: Pinned devpi-server==6.19.1 and devpi-web==5.0.1
+- **cv**: `CONTAINER_APP_VERSION=1.0.3` (matches latest Forgejo package release)
+- **quartz**: `CONTAINER_APP_VERSION=1.28.2` (pinned nginx:1.28.2-alpine base)
+- **nettest**: `CONTAINER_APP_VERSION=0.1.0` (internal, no upstream)
+- **All others**: Existing versions carried forward with new uniform ARG pattern
 
 ## Key Files
 
 | File | Change |
 |------|--------|
-| `containers/devpi/Dockerfile` | Pin devpi-server and devpi-web versions |
-| `containers/cv/Dockerfile` | Add `ARG CV_VERSION` |
-| `containers/quartz/Dockerfile` | Add `ARG QUARTZ_VERSION` |
+| `containers/*/Dockerfile` | Add `ARG CONTAINER_APP_VERSION` to all 13 containers |
+| `service-versions.yaml` | Populate `current-version` for devpi, cv, docs |
 
 ## Verification
 
-- [ ] Every container Dockerfile either has a `*_VERSION` ARG or is documented as version-exempt (nettest)
-- [ ] `devpi` container builds with pinned versions
-- [ ] `cv` and `quartz` containers still build and serve correctly
+- [x] Every container Dockerfile has `ARG CONTAINER_APP_VERSION=X.Y.Z`
+- [x] ARG chaining tested with Docker build (nginx:1.28.2-alpine)
+- [x] devpi container pins pip package versions
+- [x] cv version matches Forgejo package release (1.0.3)
+- [x] quartz pins nginx base image to stable (1.28.2)
 
 ## Related
 

service-versions.yaml

@@ -169,22 +169,22 @@ services:
   - name: devpi
     type: hybrid
     last-reviewed: null
-    current-version: null
+    current-version: "6.19.1"
     upstream-source: https://github.com/devpi/devpi/releases
 
   - name: cv
     type: hybrid
     last-reviewed: null
-    current-version: null
+    current-version: "1.0.3"
     upstream-source: null
     notes: Personal static site, no upstream
 
   - name: docs
     type: hybrid
     last-reviewed: null
-    current-version: null
+    current-version: "1.28.2"
     upstream-source: https://github.com/jackyzha0/quartz/releases
-    notes: Quartz static site generator
+    notes: Quartz static site generator; container version tracks nginx base
 
   - name: forgejo-runner
     type: hybrid