Why are environment variables not being set inside of my docker container? - docker

Question

I have the following in my docker-compose.yml:
php:
build:
args:
http_proxy:
https_proxy:
no_proxy:
context: ./vm-images/php
environment:
http_proxy:
https_proxy:
no_proxy:
CURRENT_ENVIRONMENT: DOCKER
container_name: php
ports:
- "9000:9000"
depends_on:
- mysql
links:
- mysql:mysql
logging:
driver: "json-file"
volumes:
- /var/www/:/var/www/
My DOCKERFILE has the following:
FROM ubuntu:latest
RUN locale-gen en_US.UTF-8 && \
export LANG=en_US.UTF-8 && \
export LC_ALL=en_US.UTF-8
RUN apt-get update && \
apt-get install -y --reinstall ca-certificates
RUN apt-get update \
&& apt-get install -y --allow-unauthenticated --no-install-recommends \
software-properties-common python-software-properties
RUN add-apt-repository ppa:ondrej/php
RUN apt-get update \
&& apt-get install -y --allow-unauthenticated --no-install-recommends \
git-core \
libjpeg-progs \
mysql-client \
optipng \
php5.6 \
php5.6-curl \
php5.6-intl \
php5.6-fpm \
php5.6-gd \
php5.6-mcrypt \
php5.6-mysqli \
php5.6-pdo \
php5.6-xdebug \
php5.6-xml \
php5.6-zip
RUN rm -r /var/lib/apt/lists/*
RUN rm -r /var/cache/apt/*
RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" && \
php -r "if (hash_file('SHA384', 'composer-setup.php') === 'e115a8dc7871f15d853148a7fbac7da27d6c0030b848d9b3dc09e2a0388afed865e6a3d6b3c0fad45c48e2b5fc1196ae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" && \
php composer-setup.php --install-dir=/usr/local/bin --filename=composer && \
php -r "unlink('composer-setup.php');"
RUN mkdir -p /run/php && chown www-data:www-data /run/php
COPY files/etc/php/fpm/php-fpm.conf /etc/php/5.6/fpm/php-fpm.conf
COPY files/etc/php/fpm/pool.d/www.conf /etc/php/5.6/fpm/pool.d/www.conf
COPY files/etc/php/fpm/php.ini /etc/php/5.6/fpm/php.ini
COPY files/etc/php/cli/php.ini /etc/php/5.6/cli/php.ini
COPY files/etc/php/mods-available/xdebug.ini /etc/php/5.6/mods-available/xdebug.ini
RUN phpenmod curl intl gd mcrypt mysqli pdo xdebug xml zip
CMD ["php-fpm5.6", "--nodaemonize", "--fpm-config", "/etc/php/5.6/fpm/php-fpm.conf"]
When I run docker-compose --verbose up -d I notice that there are no env vars passed in for my php container. I've verified that those env vars are set on my host, and they are passed in for all of my other containers without fail. Anyone have any ideas?
EDIT: Strangely enough, I've also noticed that /proc/$PID/environ (where $PID is the PID of the php container [obtained by running docker inspect --format "{{.State.Pid}}" php] on the host machine is empty.