diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a09f0d0..19d7d57 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,16 +1,19 @@
-name: Build Docker image
-
-on:
-  push:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Build
-        uses: docker/build-push-action@v3
-        with:
-          push: false
+name: Build Docker image
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build
+        uses: docker/build-push-action@v3
+        with:
+          push: false
diff --git a/Dockerfile b/Dockerfile
index 22f86b9..745e517 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,7 @@ RUN apt-get update \
 
 # Install php packages and configure php.ini
 RUN echo 'memory_limit=256M' > /usr/local/etc/php/conf.d/memory-limit.ini
+RUN docker-php-ext-configure gd --with-freetype --with-jpeg
 RUN docker-php-ext-install intl gd opcache pdo_mysql pdo_pgsql zip
 RUN pecl install pcov xdebug \
     && docker-php-ext-enable pcov xdebug
@@ -26,9 +27,9 @@ COPY install_composer.sh install_composer.sh
 RUN sh install_composer.sh \
     && mv composer.phar /usr/local/bin/composer
 
-RUN wget https://github.com/fabpot/local-php-security-checker/releases/download/v1.2.0/local-php-security-checker_1.2.0_linux_amd64 \
-    && chmod +x local-php-security-checker_1.2.0_linux_amd64 \
-    && mv local-php-security-checker_1.2.0_linux_amd64 /usr/local/bin/local-php-security-checker
+RUN wget https://github.com/fabpot/local-php-security-checker/releases/download/v2.0.6/local-php-security-checker_2.0.6_linux_amd64 \
+    && chmod +x local-php-security-checker_2.0.6_linux_amd64 \
+    && mv local-php-security-checker_2.0.6_linux_amd64 /usr/local/bin/local-php-security-checker
 
 # Ansistrano roles for deployment
 RUN ansible-galaxy install ansistrano.deploy ansistrano.rollback
diff --git a/README.md b/README.md
index 155876f..5d3ec76 100644
--- a/README.md
+++ b/README.md
@@ -1,22 +1,24 @@
-![example workflow](https://github.com/appsinet/php_development/actions/workflows/publish.yml/badge.svg)
-# php_development
-A Docker image based on official PHP, with some extras for development / CI.
-
-## PHP Modules
-- iconv
-- intl
-- json
-- mbstring
-- opcache
-- pcov
-- pdo_mysql
-- pdo_pgsql
-- xdebug
-- xml
-- zip
-
-## Utilities
-- composer
-- postgresql-client
-- local-php-security-checker
-- mariadb-client
\ No newline at end of file
+![example workflow](https://github.com/appsinet/php_development/actions/workflows/publish.yml/badge.svg)
+# php_development
+A Docker image based on official PHP, with some extras for development / CI.
+
+## PHP Modules
+- intl
+- gd
+- opcache
+- pcov
+- pdo_mysql
+- pdo_pgsql
+- xdebug
+- zip
+
+## Utilities
+- ansible
+- ansible-lint
+- ansistrano
+- composer
+- local-php-security-checker
+- mariadb-client
+- node 18
+- postgresql-client
+- sentry cli
\ No newline at end of file