Update Dockerfile to release 0.4

.docker/web/Dockerfile

@@ -5,8 +5,8 @@ RUN apk --update add php-apache2 php7-session php7-mysqli && rm -f /var/cache/ap
 
 
 RUN mkdir /app && cd /app && \
-  wget https://gitlab.mbb.univ-montp2.fr/jlopez/wicopa/-/archive/v0.3/wicopa-v0.3.tar.gz && \
-  tar -xf wicopa-v0.3.tar.gz && ln -s wicopa-v0.3 wicopa && \
+  wget https://gitlab.mbb.univ-montp2.fr/jlopez/wicopa/-/archive/v0.4/wicopa-v0.4.tar.gz && \
+  tar -xf wicopa-v0.4.tar.gz && ln -s wicopa-v0.4 wicopa && \
   cp wicopa/conf/Conf.php.sample wicopa/conf/Conf.php && \
   chown -R apache:apache /app && \
   sed -i "s#DB_NAME       = ''#DB_NAME       = 'wicopa'#" wicopa/conf/Conf.php && \