Add libffi to all Postorius images. (#320)

* Add libffi to all Postorius images.

* Use Django less than a certain version.

* Fix the version constraint.

* Fix uwsgi configuration by using only processes.

postorius/Dockerfile

@@ -12,8 +12,8 @@ COPY docker-entrypoint.sh /usr/local/bin/
 # rights for management script
 RUN set -ex \
 	&& apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers \
-	   	postgresql-dev mariadb-dev \
-	&& apk add --no-cache --virtual .mailman-rundeps bash \
+	   	postgresql-dev mariadb-dev libffi-dev \
+	&& apk add --no-cache --virtual .mailman-rundeps bash libffi \
 	   postgresql-client mysql-client py-mysqldb curl mailcap \
 	&& pip install -U Django==2.1.5 pip \
 	&& pip install postorius==1.2.3 \

postorius/Dockerfile.dev

@@ -16,8 +16,8 @@ ARG CLIENT_REF
 # rights for management script
 RUN set -ex \
 	&& apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers git \
-	   	postgresql-dev mariadb-dev \
-	&& apk add --no-cache --virtual .mailman-rundeps bash \
+	   	postgresql-dev mariadb-dev libffi-dev \
+	&& apk add --no-cache --virtual .mailman-rundeps bash libffi \
 	   postgresql-client mysql-client py-mysqldb curl mailcap \
 	&& pip install -U git+https://gitlab.com/mailman/mailmanclient@${CLIENT_REF} \
 		                git+https://gitlab.com/mailman/postorius@${POSTORIUS_REF} \
@@ -26,7 +26,7 @@ RUN set -ex \
 		                psycopg2 \
 		                dj-database-url \
 		                mysqlclient \
-	&& pip install -U django==2.1.5\
+	&& pip install -U 'Django<2.2' \
 	&& pip install -U git+https://gitlab.com/mailman/django-mailman3@${DJ_MM3_REF} \
 	&& apk del .build-deps \
 	&& addgroup -S mailman \

postorius/mailman-web/uwsgi.ini

@@ -3,9 +3,6 @@
 uwsgi-socket = 0.0.0.0:8080
 http-socket = 0.0.0.0:8000
 
-#Enable threading for python
-enable-threads = true
-
 # Move to the directory wher the django files are.
 chdir = /opt/mailman-web
 
@@ -14,8 +11,7 @@ wsgi-file = wsgi.py
 
 # Setup default number of processes and threads per process.
 master = true
-process = 2
-threads = 2
+process = 4
 
 # Drop privielges and don't run as root.
 uid = mailman