From 1fecc2b47fd0c406a51401f4c961b4b5e2d51c06 Mon Sep 17 00:00:00 2001
From: myrmidex <myrmidex@myrmidex.net>
Date: Sun, 16 Aug 2026 01:12:25 +0200
Subject: [PATCH] 57 - Add prebuilt CI image and images.yml workflow

---
 .forgejo/workflows/ci.yml     | 13 +++--------
 .forgejo/workflows/images.yml | 44 +++++++++++++++++++++++++++++++++++
 docker/build/Dockerfile.ci    | 35 ++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+), 10 deletions(-)
 create mode 100644 .forgejo/workflows/images.yml
 create mode 100644 docker/build/Dockerfile.ci

diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index a4127b0..ad9db61 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
   ci:
     runs-on: docker
     container:
-      image: catthehacker/ubuntu:act-latest
+      image: forge.lvl0.xyz/lvl0/incr-ci:php8.3-1
 
     services:
       db:
@@ -24,17 +24,10 @@ jobs:
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
 
-      - name: Set up PHP
-        uses: https://github.com/shivammathur/setup-php@v2
-        with:
-          php-version: '8.3'
-          extensions: pdo_mysql, mbstring, xml, dom, bcmath, gd, exif, pcntl
-          coverage: pcov
-
       - name: Cache Composer dependencies
         uses: https://data.forgejo.org/actions/cache@v4
         with:
-          path: ~/.composer/cache
+          path: ~/.cache/composer
           key: composer-${{ hashFiles('composer.lock') }}
           restore-keys: composer-
 
@@ -134,7 +127,7 @@ jobs:
   build:
     runs-on: docker
     container:
-      image: catthehacker/ubuntu:act-latest
+      image: node:22-bookworm-slim
 
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
diff --git a/.forgejo/workflows/images.yml b/.forgejo/workflows/images.yml
new file mode 100644
index 0000000..5e165c9
--- /dev/null
+++ b/.forgejo/workflows/images.yml
@@ -0,0 +1,44 @@
+name: Build and Push CI Image
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'docker/build/**'
+      - '.forgejo/workflows/images.yml'
+  workflow_dispatch:
+
+jobs:
+  images:
+    runs-on: docker
+    container:
+      image: catthehacker/ubuntu:act-latest
+    strategy:
+      matrix:
+        include:
+          - name: incr-ci
+            file: docker/build/Dockerfile.ci
+            version: php8.3-1
+    steps:
+      - uses: https://data.forgejo.org/actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: https://data.forgejo.org/docker/setup-buildx-action@v3
+
+      - name: Login to Forgejo Registry
+        uses: https://data.forgejo.org/docker/login-action@v3
+        with:
+          registry: forge.lvl0.xyz
+          username: ${{ github.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Build and push
+        uses: https://data.forgejo.org/docker/build-push-action@v5
+        with:
+          context: .
+          file: ${{ matrix.file }}
+          push: true
+          tags: |
+            forge.lvl0.xyz/lvl0/${{ matrix.name }}:${{ matrix.version }}
+            forge.lvl0.xyz/lvl0/${{ matrix.name }}:latest
+            forge.lvl0.xyz/lvl0/${{ matrix.name }}:${{ github.sha }}
diff --git a/docker/build/Dockerfile.ci b/docker/build/Dockerfile.ci
new file mode 100644
index 0000000..512019c
--- /dev/null
+++ b/docker/build/Dockerfile.ci
@@ -0,0 +1,35 @@
+# Image for CI: PHP, Composer and the extensions the suite needs. No runtime
+# server; the frontend build runs in its own job on a node image.
+#
+# Published as incr-ci:php<version>-<revision>, not :latest. Runners cache
+# mutable tags and will not re-pull them, so bump the revision in the tag and
+# in ci.yml whenever this file changes.
+#
+# Debian-based rather than alpine: ffr hit repeated DNS resolution timeouts
+# against codeload.github.com on the alpine build.
+#
+# pdo_mysql, not sqlite: the migration tests query information_schema and
+# exercise MySQL-specific DDL, so CI runs against a real mysql:8.0 service.
+FROM php:8.3-cli
+
+COPY --from=mlocati/php-extension-installer:2 /usr/bin/install-php-extensions /usr/local/bin/
+
+RUN install-php-extensions \
+    pdo_mysql \
+    mbstring \
+    dom \
+    xml \
+    bcmath \
+    fileinfo \
+    pcntl \
+    gd \
+    pcov
+
+# netcat-openbsd backs the MySQL readiness check in ci.yml.
+# nodejs is not used by the app's tests; the Forgejo JavaScript actions
+# (checkout, cache) are executed with it inside this container.
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends git unzip nodejs netcat-openbsd \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY --from=composer:2 /usr/bin/composer /usr/bin/composer