Solved is_feature_enabled bug and implemented Dockerfile for moodle

roles/docker-moodle/templates/Dockerfile.j2

@@ -0,0 +1,14 @@
+FROM bitnami/moodle:{{ applications[application_id].version }}
+
+{% if applications | is_feature_enabled('oidc',application_id) %}
+# Install git (required to clone the OIDC plugin)
+USER root
+RUN install_packages git unzip
+
+# Clone the Microsoft OIDC plugin into Moodle's auth directory
+RUN git clone https://github.com/microsoft/moodle-auth_oidc.git \
+    /opt/bitnami/moodle/auth/oidc && \
+    chown -R www-data:www-data /opt/bitnami/moodle/auth/oidc
+
+USER 1001
+{% endif %}

roles/docker-moodle/templates/docker-compose.yml.j2

@@ -3,7 +3,10 @@ services:
 {% include 'roles/docker-central-database/templates/services/' + database_type + '.yml.j2' %}
   moodle:
     container_name: {{ container_name }}
-    image: docker.io/bitnami/moodle:{{applications.moodle.version}}
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: moodle_custom
     ports:
       - 127.0.0.1:{{ports.localhost.http[application_id]}}:8080
 {% include 'roles/docker-compose/templates/services/base.yml.j2' %}