Add Docker on prefixed/downgraded version only (#6368)

* move docker build to prefixed & downgraded version

* [Docker] do not scope, use existing composer dump

build/target-repository/.dockerignore

@@ -10,7 +10,6 @@ phpstan.neon
 rector.php
 phpunit.xml
 ecs.php
-changelog-linker.php
 phpstan-for-rector.neon
 
 LICENSE

build/target-repository/.github/workflows/publish_docker_images.yaml

@@ -15,7 +15,7 @@ env:
 
 jobs:
     publish_images:
-        runs-on: ubuntu-20.04
+        runs-on: ubuntu-latest
         strategy:
             fail-fast: false
             matrix:

build/target-repository/Dockerfile

@@ -31,23 +31,11 @@ RUN apt-get update && apt-get install -y \
 COPY --from=composer:2.0.9 /usr/bin/composer /usr/bin/composer
 ENV COMPOSER_ALLOW_SUPERUSER=1 COMPOSER_MEMORY_LIMIT=-1 COMPOSER_NO_INTERACTION=1
 
-# Run php-scoper, results go to /scoped
-RUN wget https://github.com/humbug/php-scoper/releases/download/0.14.0/php-scoper.phar -N --no-verbose
-
 # This is to make parsing version possible
 COPY .git .git
 
-# First copy composer.json only to leverage the build cache (as long as not git-committing)
-COPY composer.json composer.json
-RUN composer install --no-dev --ansi
-
-# Add source and generate full autoloader
+# Add source
 COPY . .
-RUN composer dump-autoload --classmap-authoritative --no-dev
-
-RUN rm -f "phpstan-for-rector.neon" \
-    && php -d memory_limit=-1 php-scoper.phar add-prefix preload.php bin config packages rules src templates vendor composer.json --output-dir /scoped --config scoper.php \
-    && composer dump-autoload --optimize --classmap-authoritative --no-dev --working-dir /scoped
 
 # Build runtime image
 FROM base as rector
@@ -63,7 +51,7 @@ ENTRYPOINT [ "rector" ]
 VOLUME ["/project"]
 WORKDIR "/project"
 
-COPY --from=build /scoped /rector
+COPY --from=build . /rector
 RUN chmod +x /rector/bin/rector
 
 RUN mkdir -p /tmp/opcache \