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Fix README changed on PR-182

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There no point in changing the build process of an image based on this
baseimage, since the services would be already installed (or note) on
the original image. The point for optional services installation is
just useful when build your own image based on this baseimage source
repository, change the `image/buildconfig` file.
This commit is contained in:
Enderson Maia 2015-07-15 17:34:35 -03:00
parent bbc639b372
commit d3f2382c73
1 changed files with 6 additions and 32 deletions
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README.md
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@ -530,45 +530,19 @@ If you want to call the resulting image something else, pass the NAME variable,
The default baseimage-docker installs `syslog-ng`, `cron` and `sshd` services during the build process. The default baseimage-docker installs `syslog-ng`, `cron` and `sshd` services during the build process.
In case you don't need one or more of these services in your image, you can disable its installation and/or install the substituite service of your preference. In case you don't need one or more of these services in your image, you can disable its installation.
You can user the `ENV` directive in your Dockerfile for these three variables : As shown in the following example, to prevent `sshd` from being installed into your image, set `1` to the `DISABLE_SSH` variable in the `./image/buildconfig` file.
* `DISABLE_SYSLOG`
* `DISABLE_SSH`
* `DISABLE_CRON`
For ex., if you want to disable ssh on your image :
#...
FROM phusion/baseimage:<VERSION>
# Set correct environment variables.
ENV HOME /root
# Disable SSH
ENV DISABLE_SSH 1
# Use baseimage-docker's init system.
CMD ["/sbin/my_init"]
# ...put your own build instructions here...
# Clean up APT when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
If you don't want to use the `ENV` directive inside your Dockerfile and avoid creating another image layer, as shown in the following example, to prevent `sshd` from being installed into your image, set `1` to the `DISABLE_SSH` variable in the `./image/buildconfig` file.
### In ./image/buildconfig ### In ./image/buildconfig
# ... # ...
# Default services # Default services
# Set 1 to the service you want to disable # Set 1 to the service you want to disable
export DISABLE_SYSLOG=${DISABLE_SYSLOG:-0} export DISABLE_SYSLOG=0
export DISABLE_SSH=${DISABLE_SSH:-1} export DISABLE_SSH=1
export DISABLE_CRON=${DISABLE_CRON:-0} export DISABLE_CRON=0
Then you can proceed with `make build` command.
Then you can proceed with `docker build` command.
<a name="conclusion"></a> <a name="conclusion"></a>
## Conclusion ## Conclusion