Use persistent volume for sessions

Issue #32

Signed-off-by: Michal Čihař <michal@cihar.com>

Dockerfile

@@ -11,6 +11,8 @@ COPY config.inc.php /www/
 COPY run.sh /run.sh
 RUN chmod u+rwx /run.sh
 
+VOLUME /sessions
+
 EXPOSE 80
 
 ENV PHP_UPLOAD_MAX_FILESIZE=64M \

docker-compose.yml

@@ -6,3 +6,5 @@ phpmyadmin:
     restart: always
     ports:
      - 8080:80
+    volumes:
+     - /sessions

run.sh

@@ -11,4 +11,5 @@ fi
 exec php -S 0.0.0.0:80 -t /www/ \
     -d upload_max_filesize=$PHP_UPLOAD_MAX_FILESIZE \
     -d post_max_size=$PHP_UPLOAD_MAX_FILESIZE \
-    -d max_input_vars=$PHP_MAX_INPUT_VARS
+    -d max_input_vars=$PHP_MAX_INPUT_VARS \
+    -d session.save-path=/sessions