netz39-infra-ansible/roles/setup-http-site-proxy/templates/apache-docker-proxy-site.j2

<VirtualHost {{ ansible_default_ipv4.address }}:80 [{{ ansible_default_ipv6.address }}]:80>
    ServerAdmin {{ server_admin }}
    ServerName {{ site_name }}
    ServerAlias {{ site_name }}
    ErrorLog /var/log/apache2/{{ site_name }}-error.log
    CustomLog /var/log/apache2/{{ site_name }}-access.log common

    Alias /.well-known/acme-challenge /usr/local/etc/dehydrated/challenge

    <ifmodule mod_rewrite.c>
        RewriteEngine On
        RewriteCond %{REQUEST_URI} !^/\.well\-known/acme\-challenge/
        RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
    </ifmodule>
</VirtualHost>

<IfFile /usr/local/etc/dehydrated/certs/{{ site_name }}>
<VirtualHost {{ ansible_default_ipv4.address }}:443 [{{ ansible_default_ipv6.address }}]:443>
    ServerAdmin {{ server_admin }}
    ServerName {{ site_name }}
    ServerAlias {{ site_name }}

    ErrorLog /var/log/apache2/{{ site_name }}-error.log
    CustomLog /var/log/apache2/{{ site_name }}-access.log common

    SSLEngine on
    SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown
    SSLCertificateFile    /usr/local/etc/dehydrated/certs/{{ site_name }}/cert.pem
    SSLCertificateKeyFile /usr/local/etc/dehydrated/certs/{{ site_name }}/privkey.pem
    SSLCertificateChainFile /usr/local/etc/dehydrated/certs/{{ site_name }}/chain.pem

    ProxyPass / http://{{ backend_host | default("localhost") }}:{{proxy_port}}/
    RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
    RequestHeader set "X-Forwarded-SSL" expr=%{HTTPS}

    <ifmodule mod_rewrite.c>
        # see documentation of wstunnel: This allwos generic websocket passthrough
        RewriteEngine On
        RewriteCond %{HTTP:Upgrade} websocket [NC]
        RewriteCond %{HTTP:Connection} upgrade [NC]
        RewriteRule ^/?(.*) "ws://{{ backend_host | default("localhost") }}:{{ proxy_port }}/$1" [P,L]
    </ifmodule>
</VirtualHost>
</IfFile>