147 - Base the CI image on Debian instead of Alpine

.forgejo/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   ci:
     runs-on: docker
     container:
-      image: forge.lvl0.xyz/lvl0/fedi-feed-router-ci:php8.3-1
+      image: forge.lvl0.xyz/lvl0/fedi-feed-router-ci:php8.3-2
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
 

.forgejo/workflows/images.yml

@@ -21,7 +21,7 @@ jobs:
             version: php8.3-1
           - name: fedi-feed-router-ci
             file: docker/build/Dockerfile.ci
-            version: php8.3-1
+            version: php8.3-2
     steps:
       - uses: https://data.forgejo.org/actions/checkout@v4
 

docker/build/Dockerfile.ci

@@ -6,18 +6,27 @@
 # cache mutable tags and will not re-pull them, so bump the revision in the tag
 # and in ci.yml whenever this file changes.
 #
-# php:alpine already bundles the rest of what composer.lock requires. gd is not
+# Debian-based rather than alpine: the alpine build hit repeated DNS resolution
-# declared anywhere but ThumbnailUploader calls it directly.
+# timeouts against codeload.github.com during composer install.
-FROM php:8.3-alpine
+#
+# gd is not declared in composer.lock but ThumbnailUploader calls it directly.
+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_sqlite \
+    mbstring \
+    dom \
+    xml \
+    fileinfo \
     pcntl \
     gd
 
 # nodejs is not used by the app's tests; the Forgejo/GitHub JavaScript actions
 # (checkout, cache) are executed with it inside this container.
-RUN apk add --no-cache git unzip nodejs
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends git unzip nodejs \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY --from=composer:2 /usr/bin/composer /usr/bin/composer