Use authbind to bind privileged ports

rootfs/Dockerfile

@@ -20,14 +20,13 @@ WORKDIR  /etc/nginx
 
 RUN clean-install \
   diffutils \
-  libcap2-bin \
   dumb-init
 
 COPY . /
 
 # Fix permission during the build to avoid issues at runtime
 # with volumes (custom templates)
-RUN bash -eux -c ' \
+RUN bash -eu -c ' \
   writeDirs=( \
     /etc/nginx/template \
     /etc/ingress-controller/ssl \
@@ -41,9 +40,11 @@ RUN bash -eux -c ' \
     chown -R www-data.www-data ${dir}; \
   done' \
   && chown www-data.www-data /etc/nginx/nginx.conf \
-  && chown www-data.www-data /etc/nginx/opentracing.json \
-  && chown www-data.www-data /etc/nginx
+  && chown www-data.www-data /etc/nginx/opentracing.json
 
-ENTRYPOINT ["/entrypoint.sh"]
+# Create symlinks to redirect nginx logs to stdout and stderr docker log collector
+# This only works if nginx is started with CMD or ENTRYPOINT
+RUN ln -sf /dev/stdout /var/log/nginx/access.log
+RUN ln -sf /dev/stderr /var/log/nginx/error.log
 
 CMD ["/nginx-ingress-controller"]

rootfs/entrypoint.sh

@@ -1,49 +0,0 @@
-#!/usr/bin/dumb-init /bin/bash
-
-# Copyright 2017 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -e
-
-echo 0 > /tmp/nginx.pid
-# fix directory permissions
-writeDirs=( \
-    /var/log
-    /var/log/nginx
-    /tmp
-);
-for dir in "${writeDirs[@]}";do
-    mkdir -p ${dir};
-    chown -R www-data.www-data ${dir};
-done
-
-ln -sf /dev/stdout /var/log/nginx/access.log 
-ln -sf /dev/stderr /var/log/nginx/error.log 
-chown www-data.www-data /var/log/nginx/*
-
-echo "Testing if setcap is supported..."
-if setcap cap_net_bind_service=+ep /usr/sbin/nginx; then
-    echo "setcap is supported. Setting cap_net_bind_service=+ep to allow binding port lower than 1024 as non-root"
-    setcap cap_net_bind_service=+ep    /usr/sbin/nginx
-    setcap -v cap_net_bind_service=+ep /usr/sbin/nginx
-    setcap cap_net_bind_service=+ep    /nginx-ingress-controller
-    setcap -v cap_net_bind_service=+ep /nginx-ingress-controller
-
-    echo "Droping root privileges and running as user..."
-    su-exec www-data:www-data "$@"
-else
-    echo "WARNING!!!: setcap is not supported. Running as root"
-    echo "Please check https://github.com/moby/moby/issues/1070"
-    "$@"
-fi

rootfs/etc/nginx/template/nginx.tmpl

@@ -131,6 +131,7 @@ http {
     client_body_temp_path           /tmp/client-body;
     fastcgi_temp_path               /tmp/fastcgi-temp;
     proxy_temp_path                 /tmp/proxy-temp;
+    ajp_temp_path                   /tmp/ajp-temp; 
 
     client_header_buffer_size       {{ $cfg.ClientHeaderBufferSize }};
     client_header_timeout           {{ $cfg.ClientHeaderTimeout }}s;