Simplify Docker image

Since rectorphp#5665, we might get away with the PHP 8.0 image variant only,
and also no longer need to scope the Rector source code.

.github/workflows/publish_docker_images.yaml

@@ -12,9 +12,6 @@ on:
 jobs:
     publish_images:
         runs-on: ubuntu-20.04
-        strategy:
-            matrix:
-                php-version: ['7.3', '7.4', '8.0']
         steps:
             - name: Checkout
               uses: actions/checkout@v2
@@ -37,17 +34,11 @@ jobs:
                   BRANCH=$(echo "${{ github.ref }}" | sed -e '/refs\/heads\//!d; s,refs/.*/\(.*\),\1,')
 
                   if [ "master" == "$BRANCH" ]; then
-                      DOCKER_TAGS="$DOCKER_TAGS php${{ matrix.php-version }}"
-                      if [ "8.0" == "${{ matrix.php-version }}" ]; then
-                          DOCKER_TAGS="$DOCKER_TAGS latest"
-                      fi
+                      DOCKER_TAGS="$DOCKER_TAGS latest"
                   fi
 
                   if [ ! -z "$TAG" ]; then
-                      DOCKER_TAGS="$DOCKER_TAGS $TAG-php${{ matrix.php-version }}"
-                      if [ "8.0" ==  "${{ matrix.php-version }}" ]; then
-                          DOCKER_TAGS="$DOCKER_TAGS $TAG"
-                      fi
+                      DOCKER_TAGS="$DOCKER_TAGS $TAG"
                   fi
 
                   echo "Image will be tagged with: $DOCKER_TAGS"
@@ -57,13 +48,13 @@ jobs:
                       DOCKER_TAG_ARG="$DOCKER_TAG_ARG --tag rector/rector:$ARG"
                   done
 
-                  docker buildx create --name builder-php${{ matrix.php-version }} --use
+                  docker buildx create --name builder --use
                   docker buildx build \
                         --progress plain \
-                        --cache-from=rector/rector:build-cache-php${{ matrix.php-version }} \
-                        --cache-to=type=registry,ref=rector/rector:build-cache-php${{ matrix.php-version }},mode=max,push=true \
+                        --cache-from=rector/rector:build-cache \
+                        --cache-to=type=registry,ref=rector/rector:build-cache,mode=max,push=true \
                         --target rector \
                         --push \
                         $DOCKER_TAG_ARG \
                         --platform linux/amd64,linux/arm64 \
-                        --build-arg PHP_VERSION=${{ matrix.php-version }} .
+                        --build-arg .

Dockerfile

@@ -31,23 +31,22 @@ 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 --no-progress --no-autoloader --prefer-dist
 
-# Add source and generate full autoloader
-COPY . .
+# Copy relevant source paths
+COPY bin bin
+COPY config config
+COPY packages packages
+COPY rules rules
+COPY src src
+COPY templates templates
 RUN composer dump-autoload --optimize --classmap-authoritative --no-dev
 
-RUN rm -f "phpstan-for-rector.neon" \
-    && php -d memory_limit=-1 php-scoper.phar add-prefix 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
+# Parse versions
+COPY .git .git
+RUN composer install --no-dev --no-progress --no-autoloader --prefer-dist && rm -rf .git
 
 # Build runtime image
 FROM base as rector
@@ -63,7 +62,7 @@ ENTRYPOINT [ "rector" ]
 VOLUME ["/project"]
 WORKDIR "/project"
 
-COPY --from=build /scoped /rector
+COPY --from=build /build /rector
 RUN chmod +x /rector/bin/rector
 
 RUN mkdir -p /tmp/opcache \