chore(build): add dockerfile to build and test project

Author: m-bymike

.dockerignore

@@ -0,0 +1,7 @@
+vendor
+*.cache
+composer.lock
+tools/php-cs-fixer/composer.lock
+.git
+.idea
+Dockerfile

Dockerfile

@@ -0,0 +1,46 @@
+ARG PHP_VERSION
+FROM php:${PHP_VERSION}-cli-alpine AS dependencies
+ARG PHP_CS_FIXER
+RUN apk add --update --no-cache zip unzip php-zip
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+RUN addgroup -S php && adduser -S php -G php \
+    && mkdir -p /usr/src/xml-lint \
+    && chown php:php -R /usr/src/xml-lint
+WORKDIR /usr/src/xml-lint
+COPY --chown=php:php . ./
+USER php
+RUN composer install --prefer-dist -o -a -n --no-progress \
+    &&  \
+    if [[ -n "${PHP_CS_FIXER}" ]]; then \
+      composer install --working-dir=tools/php-cs-fixer --prefer-dist -o -a -n --no-progress; \
+    fi
+
+FROM php:${PHP_VERSION}-cli-alpine AS test
+ARG PHP_CS_FIXER
+RUN addgroup -S php && adduser -S php -G php \
+    && mkdir -p /usr/src/xml-lint \
+    && chown php:php -R /usr/src/xml-lint
+
+WORKDIR /usr/src/xml-lint
+COPY --from=dependencies --chown=php:php /usr/src/xml-lint ./
+USER php
+
+RUN if [[ -n "${PHP_CS_FIXER}" ]]; then \
+      php tools/php-cs-fixer/vendor/bin/php-cs-fixer fix --dry-run -v; \
+    fi
+RUN php vendor/bin/phpunit
+RUN php vendor/bin/behat
+
+FROM dependencies AS build_production
+WORKDIR /usr/src/xml-lint
+
+RUN rm -rf tools/ tests/ \
+    && composer install --prefer-dist -o -a -n --no-progress --no-dev
+
+FROM php:${PHP_VERSION}-cli-alpine AS production
+WORKDIR /usr/src/xml-lint
+COPY --from=build_production /usr/src/xml-lint ./
+RUN ln -s /usr/src/xml-lint/bin/xmllint /usr/bin/xml-lint
+WORKDIR /usr/src
+ENTRYPOINT ["php", "/usr/src/xml-lint/bin/xmllint"]
+CMD ["--help"]

README.md

@@ -57,16 +57,20 @@ php vendor/bin/behat
 Using docker:
 
 ```shell
-# Install dependencies
-docker run -it --rm -v  "$PWD":/usr/src/xml-lint -w /usr/src/xml-lint -v ${COMPOSER_HOME:-$HOME/.composer}:/tmp --user $(id -u):$(id -g) composer install --ignore-platform-reqs --no-scripts
-docker run -it --rm -v  "$PWD":/usr/src/xml-lint -w /usr/src/xml-lint/tools/php-cs-fixer -v ${COMPOSER_HOME:-$HOME/.composer}:/tmp --user $(id -u):$(id -g) composer install --ignore-platform-reqs --no-scripts
+# Example
+docker build -t xml-lint:php-8.1 --build-arg=PHP_VERSION="8.1" .
 
-# Run code style check
-docker run -it --rm -v "$PWD":/usr/src/xml-lint -w /usr/src/xml-lint php:7.4-cli php tools/php-cs-fixer/vendor/bin/php-cs-fixer fix --dry-run -v
+# PHP_VERSION: choose between 7.4, 8.0 and 8.1
+docker build -t xml-lint:php-7.4 --build-arg=PHP_VERSION="7.4" .
+docker build -t xml-lint:php-8.0 --build-arg=PHP_VERSION="8.0" .
+docker build -t xml-lint:php-8.1 --build-arg=PHP_VERSION="8.1" .
 
-# Run tests
-docker run -it --rm -v "$PWD":/usr/src/xml-lint -w /usr/src/xml-lint --user $(id -u):$(id -g) php:7.4-cli php vendor/bin/phpunit
-docker run -it --rm -v "$PWD":/usr/src/xml-lint -w /usr/src/xml-lint --user $(id -u):$(id -g) php:7.4-cli php vendor/bin/behat
+# Run with code style check
+docker build -t xml-lint:php-7.4 --build-arg=PHP_VERSION="7.4" --build-arg=PHP_CS_FIXER=true .
+
+# Use this image to run xml-lint:
+cd tests/functional/_testdata
+docker run -it --rm -v "$PWD":/var/src -w /var/src xml-lint:php-7.4 -r -v -- ./
 ```