Example of my-nginx/run.sh. For presentation: Docker on AWS

run.sh

#!/bin/sh

echo -e "`date +'%Y-%m-%d %T.%N%z'` Starting Nginx..."

CONFIG_SRC=/custom/config/site.conf
CONFIG_DEST=/etc/nginx/conf.d/site.conf
CONFIG_LOGS=/custom/logs

# Replacing needed environment variables in config (envsubst will break $uri)
# Store final config in logs, for easier debugging
# Start nginx without daemon,as docker keeps control over daemon

# Update configuration with environment variables
CONFIG_TMP="$CONFIG_DEST.tmp"
cp ${CONFIG_SRC} ${CONFIG_TMP}
for LINE in `env`; do
    IN=`echo $LINE | cut -d "=" -f 1`
    OUT=`echo $LINE | cut -d "=" -f 2`
    sed -e "s#\${$IN}#$OUT#g" < ${CONFIG_TMP} > ${CONFIG_DEST}
    cat ${CONFIG_DEST} > ${CONFIG_TMP}
done
rm ${CONFIG_TMP}
cat ${CONFIG_DEST} > ${CONFIG_LOGS}/site.conf.bak

# running nginx
nginx -g 'daemon off;'