Add Docker and GitHub Actions CI for PHP 8.2-8.5 on Debian and Alpine

Separate Dockerfiles for Debian and Alpine with parameterized PHP
version. CI matrix tests 8 combinations (4 PHP versions x 2 platforms).
Added .dockerignore to prevent stale host build artifacts from
corrupting cross-version Docker builds.

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

Author: rudi-augment

.dockerignore

@@ -0,0 +1,31 @@
+.git
+.github
+.idea
+.libs
+build
+modules
+autom4te.cache
+vendor
+**/*.o
+**/*.lo
+**/*.la
+**/*.dep
+*.tgz
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+configure
+configure.in
+libtool
+ltmain.sh
+Makefile
+Makefile.*
+aclocal.m4
+acinclude.m4
+install-sh
+missing
+mkinstalldirs
+run-tests.php
+tmp-php.ini

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    name: PHP ${{ matrix.php }} (${{ matrix.platform }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { php: '8.2', platform: debian,  dockerfile: Dockerfile }
+          - { php: '8.2', platform: alpine,  dockerfile: Dockerfile.alpine }
+          - { php: '8.3', platform: debian,  dockerfile: Dockerfile }
+          - { php: '8.3', platform: alpine,  dockerfile: Dockerfile.alpine }
+          - { php: '8.4', platform: debian,  dockerfile: Dockerfile }
+          - { php: '8.4', platform: alpine,  dockerfile: Dockerfile.alpine }
+          - { php: '8.5', platform: debian,  dockerfile: Dockerfile,        tag: '8.5-rc' }
+          - { php: '8.5', platform: alpine,  dockerfile: Dockerfile.alpine, tag: '8.5-rc' }
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build
+        run: docker build -f ${{ matrix.dockerfile }} --build-arg PHP_VERSION=${{ matrix.tag || matrix.php }} -t ext-decimal .
+
+      - name: Test
+        run: docker run --rm ext-decimal

.gitignore

@@ -13,6 +13,7 @@
 *~
 .#*
 .deps
+*.dep
 .idea
 .libs
 /include

Dockerfile

@@ -1,4 +1,5 @@
-FROM php:8.2-cli
+ARG PHP_VERSION=8.4
+FROM php:${PHP_VERSION}-cli
 
 RUN apt-get update && apt-get install -y \
     libmpdec-dev \
@@ -8,9 +9,10 @@ WORKDIR /ext-decimal
 
 COPY . .
 
-RUN phpize \
+RUN phpize --clean > /dev/null 2>&1 || true \
+    && phpize \
     && ./configure \
     && make -j$(nproc) \
     && make install
 
-CMD ["make", "test", "TESTS=tests", "NO_INTERACTION=1"]
+CMD ["make", "test", "TESTS=tests", "NO_INTERACTION=1", "REPORT_EXIT_STATUS=1"]

Dockerfile.alpine

@@ -0,0 +1,21 @@
+ARG PHP_VERSION=8.4
+FROM php:${PHP_VERSION}-cli-alpine
+
+RUN apk add --no-cache \
+    mpdecimal-dev \
+    gcc \
+    make \
+    autoconf \
+    libc-dev
+
+WORKDIR /ext-decimal
+
+COPY . .
+
+RUN phpize --clean > /dev/null 2>&1 || true \
+    && phpize \
+    && ./configure \
+    && make -j$(nproc) \
+    && make install
+
+CMD ["make", "test", "TESTS=tests", "NO_INTERACTION=1", "REPORT_EXIT_STATUS=1"]