diff --git a/.github/workflows/ci-dockerhub.yml b/.github/workflows/ci-dockerhub.yml
index bc007dc..2fcb325 100644
--- a/.github/workflows/ci-dockerhub.yml
+++ b/.github/workflows/ci-dockerhub.yml
@@ -1,3 +1,7 @@
+# amd64 only:
+# docker buildx build --push --platform linux/amd64 --tag xxx/xxx:latest
+# multiplatform:
+# docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64,linux/386 --tag xxx/xxx:latest
 name: ci-dockerhub
 
 on:
@@ -29,6 +33,6 @@ jobs:
         uses: docker/build-push-action@v3
         with:
           context: .
-          platforms: linux/arm/v7,linux/arm64/v8,linux/amd64,linux/386
+          platforms: linux/amd64
           push: true
           tags: filegator/filegator:latest, filegator/filegator:${{ github.ref_name }}
diff --git a/Dockerfile b/Dockerfile
index 5fb9fb5..73b3299 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -32,10 +32,11 @@ RUN rm -rf node_modules frontend tests docs .git*
 FROM php:7-apache-buster
 
 RUN apt-get update > /dev/null
-RUN apt-get install -y git libzip-dev
+RUN apt-get install -y git libzip-dev libldap2-dev
 
-RUN docker-php-ext-install zip
-RUN docker-php-ext-enable zip
+RUN docker-php-ext-configure ldap --with-libdir=lib/x86_64-linux-gnu/
+RUN docker-php-ext-install zip ldap
+RUN docker-php-ext-enable zip ldap
 
 COPY --from=builder /var/www/filegator /var/www/filegator
 RUN chown -R www-data:www-data /var/www/filegator/