init APACHE_LOCK_DIR and mutexFile

Dockerfile

@@ -11,7 +11,8 @@ RUN apt-get update && \
             ca-certificates \
             libjansson4 \
             libapache2-mod-auth-openidc \
-            vim apt-utils && \
+            vim apt-utils \
+            less && \
             rm -rf /var/lib/apt/lists/* && \
     a2enmod auth_openidc && \
     a2enmod headers && \
@@ -22,7 +23,8 @@ RUN apt-get update && \
     a2enmod env && \
     a2enmod mime && \
     a2enmod proxy_wstunnel && \
-    a2enmod negotiation
+    a2enmod negotiation && \
+    sed -i 's/#Mutex/Mutex/g' /etc/apache2/mods-enabled/ssl.conf
 
 ADD apache2.conf /etc/apache2/apache2.conf
 
@@ -31,6 +33,7 @@ ENV APACHE_RUN_USER www-data
 ENV APACHE_RUN_DIR /var/run/apache2
 ENV APACHE_PID_FILE /var/run/apache2/pid
 ENV APACHE_LOG_DIR /var/log/apache2
+ENV APACHE_LOCK_DIR /var/lock/apache2
 
 # set to debug to debug apache oid problems
 # BE AWARE: loglevel debug will log all tokens and MUST NEVER be used in production
@@ -58,11 +61,12 @@ ENV OIDC_PROVIDER_ENDSESSION_ENDPOINT "/v2/logout"
 ENV OIDC_RETURN_TO "http://localhost/openidc?logout=get"
 
 RUN mkdir -p /var/run/apache2 /var/www/html/app && \
+    mkdir -p /var/lock/apache2/ssl_mutex && \
     mkdir -p /config/global.d && \
     mkdir -p /config/vhost-80.d && \
     mkdir -p /config/vhost-443.d && \
-    chmod -R 755 /var/www/html/app && \
+    chmod -R 755 /var/www/html/app /var/lock/apache2 && \
-    chown -R www-data /var/run/apache2 /var/log/apache2 /var/www/html/app && \
+    chown -R www-data /var/run/apache2 /var/log/apache2 /var/www/html/app /var/lock/apache2 && \
     rm /etc/apache2/sites-enabled/000-default.conf
 
 ADD index.html /var/www/html/app