.gitea/ci/Dockerfile

@@ -1,66 +0,0 @@
-# CI image for unsupervised-scheduler, one tag per PHP version.
-#
-# Built and published by .gitea/workflows/ci-images.yml to
-# git.unsupervised.ca/unsupervised/ci-php:<php-version>. CI and release jobs
-# run inside it via `container:`, so nothing installs PHP at job time.
-#
-# Why: setup-php installs 8.3+ through apt/the ondrej PPA on these arm64
-# runners — a ~145s floor against ~35s for 8.1/8.2, with a tail that has
-# twice crossed into hard failure (#178). Pulling a ~120MB image from the
-# registry in our own cluster replaces that entirely (#187).
-
-ARG PHP_VERSION=8.3
-FROM php:${PHP_VERSION}-cli-alpine
-
-# bash and nodejs are not optional: act_runner executes JavaScript actions
-# (actions/checkout, actions/cache, actions/upload-artifact) *inside* the job
-# container, and shells `run:` steps through bash.
-#
-# coreutils, gawk, grep, sed and tar replace the busybox applets with the GNU
-# ones the workflow scripts are written against (`tac`, `grep --include`).
-# tar is not optional: actions/cache shells out to `tar --posix -P`, which
-# busybox rejects outright, so every cache step fails without it. zstd is what
-# actions/cache prefers over gzip when it is present.
-#
-# jq, curl, git and zip/unzip are used by release.yml and bin/build-zip.sh.
-RUN apk add --no-cache \
-        bash \
-        coreutils \
-        curl \
-        gawk \
-        git \
-        grep \
-        jq \
-        nodejs \
-        sed \
-        tar \
-        unzip \
-        zip \
-        zstd \
-        icu-libs \
-        libzip \
- && apk add --no-cache --virtual .build-deps \
-        $PHPIZE_DEPS \
-        icu-dev \
-        libzip-dev \
- && docker-php-ext-install -j"$(nproc)" intl zip \
- && apk del --no-network .build-deps
-
-# mbstring is compiled into the official php images; intl and zip are added
-# above. That covers what phpunit, phpstan, phpcs and Composer need.
-
-COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
-
-# Jobs run as root inside the container, and never answer prompts.
-ENV COMPOSER_ALLOW_SUPERUSER=1 \
-    COMPOSER_NO_INTERACTION=1 \
-    COMPOSER_HOME=/composer
-
-RUN mkdir -p "$COMPOSER_HOME" \
- && tar --version | head -1 | grep -q 'GNU tar' \
- && php -v \
- && php -m | grep -qx intl \
- && php -m | grep -qx mbstring \
- && composer --version
-
-CMD ["/bin/bash"]

.gitea/workflows/ci-images.yml

@@ -1,94 +0,0 @@
-name: CI Images
-
-# Publishes the per-PHP-version images that ci.yml and release.yml run inside
-# (#187). Nothing else consumes them, so this workflow is the only place the
-# registry path is written down.
-#
-# Triggers:
-#   - the Dockerfile or this workflow changing on main, so an edit ships;
-#   - the same paths on a pull request, which builds but does not push, so a
-#     broken Dockerfile is caught before it reaches main;
-#   - workflow_dispatch, to rebuild on demand;
-#   - weekly, so PHP patch releases and Alpine security updates land without
-#     anyone remembering to ask.
-
-on:
-  push:
-    branches:
-      - main
-    paths:
-      - '.gitea/ci/Dockerfile'
-      - '.gitea/workflows/ci-images.yml'
-  pull_request:
-    paths:
-      - '.gitea/ci/Dockerfile'
-      - '.gitea/workflows/ci-images.yml'
-  schedule:
-    - cron: '17 4 * * 1'
-  workflow_dispatch:
-
-env:
-  # The instance ROOT_URL host — the container registry lives on the same host.
-  REGISTRY: git.unsupervised.ca
-  IMAGE: unsupervised/ci-php
-
-jobs:
-  build:
-    name: Build CI image (PHP ${{ matrix.php }})
-    runs-on: ubuntu-latest
-    strategy:
-      # One version failing should not hide whether the others built.
-      fail-fast: false
-      matrix:
-        # Keep in step with the test matrix in ci.yml.
-        php:
-          - '8.1'
-          - '8.2'
-          - '8.3'
-          - '8.5'
-    steps:
-      - uses: actions/checkout@v4
-
-      # The images are built natively, so they carry the runner's
-      # architecture only. Fine while every runner is arm64; if a runner of a
-      # different architecture ever joins the pool it will overwrite these
-      # tags with its own arch and the others will fail to pull.
-      - name: Check Docker is available
-        run: |
-          if ! docker info >/dev/null 2>&1; then
-            echo "No usable Docker daemon in the job container." >&2
-            echo "act_runner needs container.docker_host set (or left empty to autodetect)." >&2
-            exit 1
-          fi
-          docker version --format 'client {{.Client.Version}} / server {{.Server.Version}} / arch {{.Server.Arch}}'
-
-      # secrets.GITHUB_TOKEN is the Actions task token and can write packages
-      # for the repository owner. REGISTRY_TOKEN is an escape hatch: set it to
-      # a PAT with package:write if the task token is ever refused.
-      - name: Log in to the container registry
-        if: github.event_name != 'pull_request'
-        run: |
-          echo "${{ secrets.REGISTRY_TOKEN || secrets.GITHUB_TOKEN }}" \
-            | docker login "${REGISTRY}" -u "${{ vars.REGISTRY_USER || github.actor }}" --password-stdin
-
-      - name: Build
-        run: |
-          docker build \
-            --pull \
-            --build-arg "PHP_VERSION=${{ matrix.php }}" \
-            --tag "${REGISTRY}/${IMAGE}:${{ matrix.php }}" \
-            --file .gitea/ci/Dockerfile \
-            .gitea/ci
-
-      # Pull requests build only — the tags on the registry are what the other
-      # workflows run inside, so only main and a manual dispatch move them.
-      - name: Push
-        if: github.event_name != 'pull_request'
-        run: |
-          image="${REGISTRY}/${IMAGE}:${{ matrix.php }}"
-          docker push "${image}"
-          echo "Published ${image}"
-
-      - name: Log out
-        if: always() && github.event_name != 'pull_request'
-        run: docker logout "${REGISTRY}" || true

.gitea/workflows/ci.yml

@@ -7,56 +7,31 @@ on:
       - develop
   pull_request:
 
+# Jobs that need PHP run inside the shared CI images maintained in the
+# Unsupervised/ci-php repository. PHP, Composer, the intl and zip extensions
+# and the GNU CLI tools are already in the image, so there is no toolchain
+# setup step in any job here.
+#
+# The registry path is written out at each use because
+# jobs.<id>.container.image cannot read the `env` context.
+
 jobs:
-  # PHPCS and PHPStan share a job so the two of them draw once on Setup PHP
+  phpcs:
-  # rather than twice. That step is slow and intermittently fails on 8.3
+    name: Coding Standards
-  # (see #178), so every job that can be folded into another is one less
-  # chance for a run to fall over. They run as separate steps, and PHPCS
-  # failing stops the job before PHPStan reports.
-  quality:
-    name: Coding Standards & Static Analysis
     runs-on: ubuntu-latest
+    container:
+      image: git.unsupervised.ca/unsupervised/ci-php:8.3
     steps:
       - uses: actions/checkout@v4
 
-      # setup-php installs PHP 8.3+ through php-builder, which apt-installs ~70
+      # COMPOSER_HOME is /composer in the image, so that is where the
-      # -dev packages before unpacking the build (#178). Ubuntu's image deletes
+      # download cache lives. composer.lock is what fingerprints the
-      # the .debs after install, so every job re-downloads them. Keeping them
+      # dependency set.
-      # and restoring them from the cache server, which lives in the cluster,
-      # turns a WAN download into a local one.
-      #
-      # Keyed per PHP version because the install path differs by version and
-      # the package sets are not interchangeable: 8.3+ pulls the ~70 -dev
-      # packages through php-builder, while 8.1 and 8.2 come from the ondrej
-      # PPA as a handful of runtime packages. Sharing one key across both lets
-      # whichever job finishes first decide what the others restore, and 8.1 is
-      # always first.
-      #
-      # Only the .debs are cached, never /var/lib/apt/lists — a stale index is
-      # how you get 404s mid-install.
-      - name: Keep downloaded .debs
-        run: |
-          sudo rm -f /etc/apt/apt.conf.d/docker-clean
-          echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' \
-            | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
-
-      - name: Cache apt packages
-        uses: actions/cache@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-php8.3-${{ runner.arch }}-v1
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: '8.3'
-          tools: composer:v2
-
       - name: Cache Composer packages
         uses: actions/cache@v4
         with:
-          path: ~/.composer/cache
+          path: /composer/cache
-          key: composer-${{ hashFiles('composer.json') }}
+          key: composer-${{ hashFiles('composer.lock') }}
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-interaction
@@ -64,15 +39,36 @@ jobs:
       - name: Run PHPCS
         run: composer cs
 
+  phpstan:
+    name: Static Analysis
+    runs-on: ubuntu-latest
+    container:
+      image: git.unsupervised.ca/unsupervised/ci-php:8.3
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Cache Composer packages
+        uses: actions/cache@v4
+        with:
+          path: /composer/cache
+          key: composer-${{ hashFiles('composer.lock') }}
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --no-interaction
+
       - name: Run PHPStan
         run: composer lint
 
   test:
     name: Tests (PHP ${{ matrix.php }})
     runs-on: ubuntu-latest
+    container:
+      image: git.unsupervised.ca/unsupervised/ci-php:${{ matrix.php }}
     strategy:
       fail-fast: false
       matrix:
+        # A version can only be added here once ci-php publishes the matching
+        # tag.
         php:
           - '8.1'
           - '8.2'
@@ -81,46 +77,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      # setup-php installs PHP 8.3+ through php-builder, which apt-installs ~70
-      # -dev packages before unpacking the build (#178). Ubuntu's image deletes
-      # the .debs after install, so every job re-downloads them. Keeping them
-      # and restoring them from the cache server, which lives in the cluster,
-      # turns a WAN download into a local one.
-      #
-      # Keyed per PHP version because the install path differs by version and
-      # the package sets are not interchangeable: 8.3+ pulls the ~70 -dev
-      # packages through php-builder, while 8.1 and 8.2 come from the ondrej
-      # PPA as a handful of runtime packages. Sharing one key across both lets
-      # whichever job finishes first decide what the others restore, and 8.1 is
-      # always first.
-      #
-      # Only the .debs are cached, never /var/lib/apt/lists — a stale index is
-      # how you get 404s mid-install.
-      - name: Keep downloaded .debs
-        run: |
-          sudo rm -f /etc/apt/apt.conf.d/docker-clean
-          echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' \
-            | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
-
-      - name: Cache apt packages
-        uses: actions/cache@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-php${{ matrix.php }}-${{ runner.arch }}-v1
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: ${{ matrix.php }}
-          extensions: mbstring, intl
-          coverage: none
-          tools: composer:v2
-
       - name: Cache Composer packages
         uses: actions/cache@v4
         with:
-          path: ~/.composer/cache
+          path: /composer/cache
-          key: ${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
+          key: ${{ matrix.php }}-composer-${{ hashFiles('composer.lock') }}
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-interaction
@@ -128,6 +89,8 @@ jobs:
       - name: Run PHPUnit
         run: composer test
 
+  # Runs on the runner image rather than a container: it needs no PHP, and it
+  # uses GNU grep's --include.
   no-debug:
     name: No Debug Code
     runs-on: ubuntu-latest
@@ -144,46 +107,15 @@ jobs:
   build:
     name: Build Plugin Zip
     runs-on: ubuntu-latest
+    container:
+      image: git.unsupervised.ca/unsupervised/ci-php:8.3
     # Only build a shippable artifact once changes land on main, and only
     # after the quality gates pass.
-    needs: [quality, test, no-debug]
+    needs: [phpcs, phpstan, test, no-debug]
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     steps:
       - uses: actions/checkout@v4
 
-      # setup-php installs PHP 8.3+ through php-builder, which apt-installs ~70
-      # -dev packages before unpacking the build (#178). Ubuntu's image deletes
-      # the .debs after install, so every job re-downloads them. Keeping them
-      # and restoring them from the cache server, which lives in the cluster,
-      # turns a WAN download into a local one.
-      #
-      # Keyed per PHP version because the install path differs by version and
-      # the package sets are not interchangeable: 8.3+ pulls the ~70 -dev
-      # packages through php-builder, while 8.1 and 8.2 come from the ondrej
-      # PPA as a handful of runtime packages. Sharing one key across both lets
-      # whichever job finishes first decide what the others restore, and 8.1 is
-      # always first.
-      #
-      # Only the .debs are cached, never /var/lib/apt/lists — a stale index is
-      # how you get 404s mid-install.
-      - name: Keep downloaded .debs
-        run: |
-          sudo rm -f /etc/apt/apt.conf.d/docker-clean
-          echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' \
-            | sudo tee /etc/apt/apt.conf.d/99keep-downloaded-packages >/dev/null
-
-      - name: Cache apt packages
-        uses: actions/cache@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-php8.3-${{ runner.arch }}-v1
-
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: '8.3'
-          tools: composer:v2
-
       - name: Build plugin zip
         run: composer build
 

.gitea/workflows/release.yml

@@ -15,15 +15,13 @@ jobs:
   release:
     name: Build and Publish Release
     runs-on: ubuntu-latest
+    # The shared CI image carries composer, curl, jq and the GNU coreutils
+    # the steps below shell out to. See docs/ci.md.
+    container:
+      image: git.unsupervised.ca/unsupervised/ci-php:8.3
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: '8.3'
-          tools: composer:v2
-
       # A tag that disagrees with the plugin header would make sites see a
       # phantom update forever (or never see a real one), so fail fast.
       - name: Verify tag matches plugin version
@@ -37,6 +35,14 @@ jobs:
           fi
           echo "version=${header_version}" >> "$GITHUB_OUTPUT"
 
+      # COMPOSER_HOME is /composer in the image, so that is where the
+      # download cache lives.
+      - name: Cache Composer packages
+        uses: actions/cache@v4
+        with:
+          path: /composer/cache
+          key: composer-${{ hashFiles('composer.lock') }}
+
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-interaction
 

.gitignore

@@ -1,5 +1,4 @@
 vendor/
-composer.lock
 coverage/
 .phpunit.result.cache
 *.log

bin/build-zip.sh

@@ -23,6 +23,10 @@ INCLUDE=(
 	"$SLUG.php"
 	"uninstall.php"
 	"composer.json"
+	# Staged so the production install below resolves to the locked versions
+	# rather than whatever is newest that day. Both are deleted again before
+	# the zip is written.
+	"composer.lock"
 	"src"
 	"templates"
 	"assets"

docs/ci.md

@@ -1,7 +1,7 @@
-# CI images
+# CI
 
-CI and release jobs do not install PHP. They run inside prebuilt images
+CI and release jobs do not install PHP. They run inside the shared images
-published to the Gitea container registry:
+maintained in [Unsupervised/ci-php](https://git.unsupervised.ca/Unsupervised/ci-php):
 
 ```
 git.unsupervised.ca/unsupervised/ci-php:8.1
@@ -10,65 +10,36 @@ git.unsupervised.ca/unsupervised/ci-php:8.3
 git.unsupervised.ca/unsupervised/ci-php:8.5
 ```
 
-The `Unsupervised` org is public, so the packages pull anonymously — jobs need
+The `Unsupervised` org is public, so they pull anonymously — no registry
-no registry credentials to use them.
+credentials in any job here. What the images contain, how they are published,
+and how to add a PHP version are documented in that repository's README.
 
-## Why
+## Which job runs where
 
-`shivammathur/setup-php` installs PHP 8.3+ from apt/the ondrej PPA on these
+| Job | Runs in |
-arm64 runners. That was a ~145s floor against ~35s for 8.1 and 8.2, with a
+|---|---|
-tail that twice ran past the step timeout and failed the run outright
+| Coding Standards (PHPCS) | `ci-php:8.3` |
-(#178). Caching the `.deb`s helped, but the apt step itself remained, and PHP
+| Static Analysis (PHPStan) | `ci-php:8.3` |
-8.5 has the same shape of problem. Pulling a ~120MB image from a registry
+| Tests | `ci-php:${{ matrix.php }}` |
-inside the cluster replaces the whole thing (#187).
+| Build Plugin Zip | `ci-php:8.3` |
+| No Debug Code | runner image — no PHP, and it uses GNU `grep --include` |
+| Open next-version bump PR (release.yml) | runner image — no PHP |
 
-## What is in the image
+PHPCS and PHPStan are separate jobs so a coding-standards failure still lets
+the static analysis result through. They run in parallel.
 
-`.gitea/ci/Dockerfile` builds on `php:<version>-cli-alpine` and adds:
+## Composer
 
-- **`bash` and `nodejs`** — act_runner runs JavaScript actions
+`composer.lock` is committed, so every job installs the same dependency set
-  (`actions/checkout`, `actions/cache`, `actions/upload-artifact`) *inside*
+and two builds of the same tag ship the same vendor tree. `bin/build-zip.sh`
-  the job container and shells `run:` steps through bash. Without these, the
+stages the lock into its build directory for the same reason, then removes it
-  first step of every job fails.
+before writing the zip.
-- **`coreutils`, `gawk`, `grep`, `sed`, `tar`** — GNU versions, because the
-  workflow scripts use `tac` and `grep --include`, which busybox does not
-  provide. GNU `tar` matters most: `actions/cache` shells out to
-  `tar --posix -P`, and busybox rejects those flags, so every cache step fails
-  without it. `zstd` is what `actions/cache` reaches for over gzip when it is
-  installed.
-- **`curl`, `jq`, `git`, `zip`, `unzip`** — used by `release.yml` and
-  `bin/build-zip.sh`.
-- **`intl` and `zip` PHP extensions**, plus Composer 2. `mbstring` is already
-  compiled into the official images.
 
-## Publishing
+The Composer download cache lives at `/composer/cache` — `COMPOSER_HOME` is
+`/composer` in the image — and is keyed on `composer.lock`.
 
-`.gitea/workflows/ci-images.yml` builds and pushes them. It runs when the
+## Adding a PHP version to the test matrix
-Dockerfile changes on `main`, weekly (so PHP patch releases and Alpine
-security updates land on their own), and on `workflow_dispatch`. On a pull
-request it builds without pushing, so a broken Dockerfile is caught before it
-reaches `main`.
 
-## Adding or dropping a PHP version
+The image has to exist first. Add the version to the `php` matrix in
-
+`ci-php`'s `.gitea/workflows/publish.yml` and merge, then add it to the `test`
-1. Add the version to the `php` matrix in `.gitea/workflows/ci-images.yml`.
+matrix in `.gitea/workflows/ci.yml` here.
-2. Merge to `main`, or dispatch the workflow, and wait for the tag to appear.
-3. Add the version to the `test` matrix in `.gitea/workflows/ci.yml`.
-
-Steps 2 and 3 cannot be one commit: a job cannot run in an image that has not
-been published yet.
-
-## Architecture
-
-The images are built natively on whichever runner picks the job, so they carry
-that runner's architecture only. Every runner in the pool is arm64 today. If
-one of a different architecture ever joins, it will overwrite these tags with
-its own arch and the rest will fail to pull — at which point the build needs
-`docker buildx` and a multi-arch manifest.
-
-## If a push is refused
-
-The build authenticates with `secrets.GITHUB_TOKEN`, the Actions task token.
-If the registry ever refuses it, create a personal access token with
-`package:write`, store it as the `REGISTRY_TOKEN` secret, and optionally set
-the `REGISTRY_USER` variable — the workflow prefers both when present.