Apache in a Docker with Supervisor (CentOS 7 & Alpine)

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Docker Image with Apache server using polinux/supervisor docker image as base.

Environmental Variable

Variable	DefaultSettings	Info
LOG_LEVEL	info	Specify log level Apache should when started. Apache Log Levels
DEFAULT_CONFIG	true	Use default config provided by Apache package - Change to false when using custom config

Usage

Basic

docker run \
  -d \
  --name httpd \
  -p 80:80 \
  polinux/httpd

Set log level to debug

docker run \
  -d \
  --name httpd \
  -p 80:80 \
  -e LOG_LEVEL="debug" \
  polinux/httpd

Build

docker build -t polinux/httpd .

Docker troubleshooting

Use docker command to see if all required containers are up and running:

$ docker ps

Check logs of httpd server container:

$ docker logs httpd

Sometimes you might just want to review how things are deployed inside a running container, you can do this by executing a bash shell through docker's exec command:

docker exec -ti httpd /bin/bash

History of an image and size of layers:

docker history --no-trunc=true polinux/httpd | tr -s ' ' | tail -n+2 | awk -F " ago " '{print $2}'

Author

Przemyslaw Ozgo (linux@ozgo.info)