Docker Support

[bdstark]

Needed to do some validation on-prem in a private network, and spent some time making up a Dockerfile to get it running. Stayed with the installation documentation in terms of Ubuntu/32 bit version which was a bit difficult with its age, the older Jave version, and Oracles change in direction with Java. Throwing it out there in case anybody needs a starting point. Setting up the Apache server as a reverse proxy to origins was a big help due to browser CORS restriction. That configuration was injected as a volume in a docker-compose file. Apologize for the formatting, it is lost in the post.

Dockerfile:
`FROM ubuntu:16.04

RUN dpkg --add-architecture i386
RUN apt-get update && apt-get upgrade && apt-get install -y \
apache2 \
apache2-doc \
ant \
git \
lib32gcc1 \
lib32stdc++6 \
libapache2-mod-php \
libcurl4-gnutls-dev:i386 \
libstdc++6:i386 \
php \
php-curl \
php-dev \
php-xdebug \
php-xml \
python2.7 \
python-pip \
python-matplotlib \
software-properties-common && \
add-apt-repository universe && \
apt-get install -y openjdk-8-jdk && \
rm -rf /var/lib/apt/lists/*
WORKDIR /var/www/html/
RUN rm -f * && \
git clone --recurse-submodules https://github.com/Dash-Industry-Forum/DASH-IF-Conformance && \
chown -R www-data:www-data /var/www/ && \
echo 'www-data ALL=NOPASSWD: ALL' >> /etc/sudoers
RUN /usr/sbin/a2enmod headers && \
/usr/sbin/a2enmod proxy_http

EXPOSE 80/tcp
STOPSIGNAL SIGWINCH
CMD ["/usr/sbin/apache2ctl", "-DFOREGROUND"]`

docker-compose.yml:
`version: '3.8'

services:
dashifct:
container_name: dashifct
image: {private_repo}
restart: on-failure
ports:
- 8030:80
volumes:
- ./000-default.conf:/etc/apache2/sites-available/000-default.conf`

Apache:
<VirtualHost *:80> ProxyPass "/dash" "http://{dash_origin:port}/dash" ProxyPass "/hls" "http://{hls_origin:port}/hls" RedirectMatch '^/$' '/DASH-IF-Conformance/Conformance-Frontend/' DocumentRoot /var/www/html <Directory /> Order Allow,Deny Allow from all AllowOverride all Header set Access-Control-Allow-Origin "*" Header set Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS" Header set Referrer-Policy "no-referrer-when-downgrade" </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost>

[dsilhavy]

@aldafu This might help for #518

[dsilhavy]

Implemented in #547 and documente here: https://github.com/Dash-Industry-Forum/DASH-IF-Conformance/wiki/Installation--guide