Provide ipaddr filter for jinja templates (#18)

* Provide ipaddr filter for jinja templates

* Avoid installing full ansible

* Fix approach to pythonpath append

* Fix permissions for ansible home dir

* Adjust permissions

* Switch ansible home instead

* More permission fixes

* Ensure correct perms for subdir

docker/Dockerfile

@@ -8,8 +8,16 @@ RUN jq -r '.settings.http.max_body_size = 52428800' /etc/unit/nginx-unit.json \
   > /etc/unit/nginx-unit-edit.json && \
   mv /etc/unit/nginx-unit-edit.json /etc/unit/nginx-unit.json
 
-COPY plugin_requirements.txt /opt/netbox/
-RUN /opt/netbox/venv/bin/pip install --no-warn-script-location -r /opt/netbox/plugin_requirements.txt
+COPY plugin_requirements.txt extra_requirements.txt /opt/netbox/
+RUN /opt/netbox/venv/bin/pip install --no-warn-script-location -r /opt/netbox/plugin_requirements.txt && \
+  /opt/netbox/venv/bin/pip install --no-warn-script-location -r /opt/netbox/extra_requirements.txt
 
-COPY plugins.py /etc/netbox/config/plugins.py
+# Add ansible.utils collection to use ipaddr filter
+RUN mkdir -p /etc/netbox/config/modules/ansible_collections/ansible && \
+  curl --fail -L https://github.com/ansible-collections/ansible.utils/archive/main.tar.gz | tar -xz -C . && \
+  mv ansible.utils-main /etc/netbox/config/modules/ansible_collections/ansible/utils && \
+  mkdir -p /tmp/.ansible/tmp && chmod -R a+rwx /tmp/.ansible
+ENV ANSIBLE_HOME=/tmp/.ansible
+
+COPY plugins.py extra.py /etc/netbox/config/
 RUN SECRET_KEY="dummydummydummydummydummydummydummydummydummydummy" /opt/netbox/venv/bin/python /opt/netbox/netbox/manage.py collectstatic --no-input

docker/extra.py

@@ -0,0 +1,8 @@
+import sys
+sys.path.append('/etc/netbox/config/modules')
+
+from ansible_collections.ansible.utils.plugins.plugin_utils.base.ipaddr_utils import ipaddr
+
+JINJA2_FILTERS = {
+    'ipaddr': ipaddr,
+}

docker/extra_requirements.txt

@@ -0,0 +1 @@
+ansible-core