# Supported tags and respective `Dockerfile` links - [`2.2.31`, `2.2` (*2.2/Dockerfile*)](https://github.com/docker-library/httpd/blob/fa5223d83a5225aa3fd5b23229b785c7764142bf/2.2/Dockerfile) - [`2.2.31-alpine`, `2.2-alpine` (*2.2/alpine/Dockerfile*)](https://github.com/docker-library/httpd/blob/fa5223d83a5225aa3fd5b23229b785c7764142bf/2.2/alpine/Dockerfile) - [`2.4.25`, `2.4`, `2`, `latest` (*2.4/Dockerfile*)](https://github.com/docker-library/httpd/blob/1990a58d6acaf056dd24b10d5923a60c27eda949/2.4/Dockerfile) - [`2.4.25-alpine`, `2.4-alpine`, `2-alpine`, `alpine` (*2.4/alpine/Dockerfile*)](https://github.com/docker-library/httpd/blob/0e4a0b59e1f4e2a5a14ca197516beb2d4df1ffb8/2.4/alpine/Dockerfile) For more information about this image and its history, please see [the relevant manifest file (`library/httpd`)](https://github.com/docker-library/official-images/blob/master/library/httpd). This image is updated via [pull requests to the `docker-library/official-images` GitHub repo](https://github.com/docker-library/official-images/pulls?q=label%3Alibrary%2Fhttpd). For detailed information about the virtual/transfer sizes and individual layers of each of the above supported tags, please see [the `repos/httpd/tag-details.md` file](https://github.com/docker-library/repo-info/blob/master/repos/httpd/tag-details.md) in [the `docker-library/repo-info` GitHub repo](https://github.com/docker-library/repo-info). # What is httpd? The Apache HTTP Server, colloquially called Apache, is a Web server application notable for playing a key role in the initial growth of the World Wide Web. Originally based on the NCSA HTTPd server, development of Apache began in early 1995 after work on the NCSA code stalled. Apache quickly overtook NCSA HTTPd as the dominant HTTP server, and has remained the most popular HTTP server in use since April 1996. > [wikipedia.org/wiki/Apache_HTTP_Server](http://en.wikipedia.org/wiki/Apache_HTTP_Server) ![logo](https://raw.githubusercontent.com/docker-library/docs/8e367edd887f5fe876890a0ab4d08806527a1571/httpd/logo.png) # How to use this image. This image only contains Apache httpd with the defaults from upstream. There is no PHP installed, but it should not be hard to extend. On the other hand, of you just want PHP with Apache httpd see the [PHP image](https://registry.hub.docker.com/_/php/) and look at the `-apache` tags. If you want to run a simple HTML server, add a simple Dockerfile to your project where `public-html/` is the directory containing all your HTML. ### Create a `Dockerfile` in your project ```dockerfile FROM httpd:2.4 COPY ./public-html/ /usr/local/apache2/htdocs/ ``` Then, run the commands to build and run the Docker image: ```console $ docker build -t my-apache2 . $ docker run -dit --name my-running-app my-apache2 ``` ### Without a `Dockerfile` If you don't want to include a `Dockerfile` in your project, it is sufficient to do the following: ```console $ docker run -dit --name my-apache-app -v "$PWD":/usr/local/apache2/htdocs/ httpd:2.4 ``` ### Configuration To customize the configuration of the httpd server, just `COPY` your custom configuration in as `/usr/local/apache2/conf/httpd.conf`. ```dockerfile FROM httpd:2.4 COPY ./my-httpd.conf /usr/local/apache2/conf/httpd.conf ``` #### SSL/HTTPS If you want to run your web traffic over SSL, the simplest setup is to `COPY` or mount (`-v`) your `server.crt` and `server.key` into `/usr/local/apache2/conf/` and then customize the `/usr/local/apache2/conf/httpd.conf` by removing the comment from the line with `#Include conf/extra/httpd-ssl.conf`. This config file will use the certificate files previously added and tell the daemon to also listen on port 443. Be sure to also add something like `-p 443:443` to your `docker run` to forward the https port. The previous steps should work well for development, but we recommend customizing your conf files for production, see [httpd.apache.org](https://httpd.apache.org/docs/2.2/ssl/ssl_faq.html) for more information about SSL setup. # Image Variants The `httpd` images come in many flavors, each designed for a specific use case. ## `httpd:` This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of. ## `httpd:alpine` This image is based on the popular [Alpine Linux project](http://alpinelinux.org), available in [the `alpine` official image](https://hub.docker.com/_/alpine). Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general. This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use [musl libc](http://www.musl-libc.org) instead of [glibc and friends](http://www.etalabs.net/compare_libcs.html), so certain software might run into issues depending on the depth of their libc requirements. However, most software doesn't have an issue with this, so this variant is usually a very safe choice. See [this Hacker News comment thread](https://news.ycombinator.com/item?id=10782897) for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images. To minimize image size, it's uncommon for additional related tools (such as `git` or `bash`) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see the [`alpine` image description](https://hub.docker.com/_/alpine/) for examples of how to install packages if you are unfamiliar). # License View [license information](https://www.apache.org/licenses/) for the software contained in this image. # Supported Docker versions This image is officially supported on Docker version 1.12.5. Support for older versions (down to 1.6) is provided on a best-effort basis. Please see [the Docker installation documentation](https://docs.docker.com/installation/) for details on how to upgrade your Docker daemon. # User Feedback ## Issues If you have any problems with or questions about this image, please contact us through a [GitHub issue](https://github.com/docker-library/httpd/issues). If the issue is related to a CVE, please check for [a `cve-tracker` issue on the `official-images` repository first](https://github.com/docker-library/official-images/issues?q=label%3Acve-tracker). You can also reach many of the official image maintainers via the `#docker-library` IRC channel on [Freenode](https://freenode.net). ## Contributing You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can. Before you start to code, we recommend discussing your plans through a [GitHub issue](https://github.com/docker-library/httpd/issues), especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing. ## Documentation Documentation for this image is stored in the [`httpd/` directory](https://github.com/docker-library/docs/tree/master/httpd) of the [`docker-library/docs` GitHub repo](https://github.com/docker-library/docs). Be sure to familiarize yourself with the [repository's `README.md` file](https://github.com/docker-library/docs/blob/master/README.md) before attempting a pull request.