Added a proxy to provide ldap auth and make health check work

Dockerfile

@@ -5,6 +5,29 @@ EXPOSE 8000
 
 RUN apt-get update && apt-get -y install busybox
 
+ENV NGINX_VERSION=1.12.0
+ENV NGINX_LDAP_VERSION=b80942160417e95adbadb16adc41aaa19a6a00d9
+
+# Build a custom nginx with ldap support
+RUN apt-get remove -y nginx-full && apt-get autoremove -y && apt-get -y install libldap2-dev libpcre3-dev
+RUN mkdir -p /tmp/nginx-ldap
+WORKDIR /tmp/nginx-ldap
+RUN wget "https://github.com/kvspb/nginx-auth-ldap/archive/${NGINX_LDAP_VERSION}.tar.gz" -O - \
+    | tar -xz -C /tmp/nginx-ldap --strip-components=1
+
+RUN mkdir -p /tmp/nginx
+WORKDIR /tmp/nginx
+RUN wget "https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz" -O - \
+    | tar -xz -C /tmp/nginx --strip-components=1
+RUN ./configure \
+    --add-dynamic-module=/tmp/nginx-ldap \
+    --modules-path=/usr/local/nginx/modules \
+    --conf-path=/app/code/nginx.conf \
+    --pid-path=/run/nginx.pid \
+    --error-log-path=/run/nginx.error.log \
+    --build=cloudron-river
+RUN make install
+
 ENV VERSION 0.14.27
 
 RUN mkdir -p /app/code \
@@ -13,6 +36,7 @@ RUN mkdir -p /app/code \
 
 WORKDIR /app/code
 
+ADD nginx.conf /app/code/nginx.conf
 ADD config.xml /app/code/config.xml.default
 ADD inittab /etc/inittab
 ADD start.sh /app/code/start.sh