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8 changed files with 183 additions and 1 deletions
0
.gitignore
vendored
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0
.gitignore
vendored
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50
Dockerfile
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50
Dockerfile
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# This image is the base image for all OpenShift v3 language container images.
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FROM registry.fedoraproject.org/f29/s2i-core:latest
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ENV SUMMARY="Base image with essential libraries and tools used as a base for \
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builder images like perl, python, ruby, etc." \
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DESCRIPTION="The s2i-base image, being built upon s2i-core, provides any \
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images layered on top of it with all the tools needed to use source-to-image \
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functionality. Additionally, s2i-base also contains various libraries needed for \
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it to serve as a base for other builder images, like s2i-python or s2i-ruby." \
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NAME=s2i-base \
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VERSION=1 \
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ARCH=x86_64
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LABEL summary="$SUMMARY" \
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description="$DESCRIPTION" \
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io.k8s.description="$DESCRIPTION" \
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io.k8s.display-name="s2i base" \
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com.redhat.component="$NAME" \
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name="$FGC/$NAME" \
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version="$VERSION" \
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maintainer="SoftwareCollections.org <sclorg@redhat.com>"
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# This is the list of basic dependencies that all language container image can
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# consume.
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RUN INSTALL_PKGS="autoconf \
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automake \
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bzip2 \
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gcc-c++ \
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gd-devel \
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gdb \
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git \
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libcurl-devel \
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libxml2-devel \
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libxslt-devel \
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lsof \
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make \
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mariadb-connector-c-devel \
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npm \
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openssl-devel \
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patch \
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postgresql-devel \
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procps-ng \
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sqlite-devel \
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unzip \
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wget \
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which \
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zlib-devel" && \
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dnf install -y --setopt=tsflags=nodocs $INSTALL_PKGS && \
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rpm -V $INSTALL_PKGS && \
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dnf clean all -y
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1
Dockerfile.fedora
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1
Dockerfile.fedora
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Dockerfile
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104
README.md
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104
README.md
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OpenShift base images
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========================================
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This repository contains Dockerfiles for images which serve as base images with all the
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essential libraries and tools needed for OpenShift language images, for example:
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* [s2i-ruby](https://github.com/sclorg/s2i-ruby-container)
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* [s2i-nodejs](https://github.com/sclorg/s2i-nodejs-container)
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* [s2i-python](https://github.com/sclorg/s2i-python-container)
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* [s2i-perl](https://github.com/sclorg/s2i-perl-container)
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* [s2i-php](https://github.com/sclorg/s2i-php-container)
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This container image also installs several development libraries, that are
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often required in the builder images above. It also includes NPM package manager.
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Sharing those development packages in a common layer saves disk space and
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improves pulling speed.
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NPM, a package manager for Node.js, offers a pleasant way to install JavaScript
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libraries, that are often needed as static files for various web applications.
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In order to offer good experience for web developers, the NPM package manager
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is also installed in the image.
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For containers where the development libraries and NPM package manager are not
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necessary, users are advised to use the s2i-core variant of this container image.
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Description
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-----------
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OpenShift S2I images use [Software Collections](https://www.softwarecollections.org/en/)
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packages to provide the latest versions of various software.
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The SCL packages are released more frequently than the RHEL or CentOS systems,
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which are unlikely to change for several years.
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We rely on RHEL and CentOS for base images, on the other hand,
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because those are stable, supported, and secure platforms.
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Normally, SCL requires manual operation to enable the collection you want to use.
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This is burdensome and can be prone to error.
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The OpenShift S2I approach is to set Bash environment variables that
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serve to automatically enable the desired collection:
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* `BASH_ENV`: enables the collection for all non-interactive Bash sessions
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* `ENV`: enables the collection for all invocations of `/bin/sh`
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* `PROMPT_COMMAND`: enables the collection in interactive shell
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Two examples:
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* If you specify `BASH_ENV`, then all your `#!/bin/bash` scripts
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do not need to call `scl enable`.
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* If you specify `PROMPT_COMMAND`, then on execution of the
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`docker exec ... /bin/bash` command, the collection will be automatically enabled.
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*Note*:
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Executables in Software Collections packages (e.g., `ruby`)
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are not directly in a directory named in the `PATH` environment variable.
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This means that you cannot do:
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$ docker exec <cid> ... ruby
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but must instead do:
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$ docker exec <cid> ... /bin/bash -c ruby
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The `/bin/bash -c`, along with the setting the appropriate environment variable,
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ensures the correct `ruby` executable is found and invoked.
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Usage
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------------------------
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Choose either the CentOS7 or RHEL7 base image:
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* **RHEL7 base image**
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To build a RHEL7 based image, you need to build it on properly subscribed RHEL machine.
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```
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$ git clone --recursive https://github.com/sclorg/s2i-base-container.git
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$ cd s2i-base-container
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$ make build VERSIONS=base TARGET=rhel7
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```
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* **CentOS7 base image**
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This image is available on DockerHub. To download it run:
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```console
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docker pull sclorg/s2i-base-centos7
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```
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To build a Base image from scratch run:
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```
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$ git clone --recursive https://github.com/sclorg/s2i-base-container.git
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$ cd s2i-base-container
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$ make build VERSIONS=base
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```
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**Notice: By omitting the `VERSION` parameter, the build/test action will be performed
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on all provided versions of s2i image.**
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See also
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--------
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Dockerfile and other sources are available on https://github.com/sclorg/s2i-base-container.
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In that repository you also can find another variants of S2I base Dockerfiles.
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Dockerfile for CentOS is called Dockerfile, Dockerfile for RHEL is called Dockerfile.rhel7.
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1
base
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1
base
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@ -0,0 +1 @@
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.
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|
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@ -1 +0,0 @@
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container sources not used for building fedora containers anymore
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1
help.md
Symbolic link
1
help.md
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@ -0,0 +1 @@
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README.md
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26
test/run
Executable file
26
test/run
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@ -0,0 +1,26 @@
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#!/bin/bash
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#
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# The 'run' performs a simple test that verifies that STI image.
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# The main focus is that the image prints out the base-usage properly.
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#
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# IMAGE_NAME specifies a name of the candidate image used for testing.
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# The image has to be available before this script is executed.
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#
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IMAGE_NAME=${IMAGE_NAME-centos/s2i-base-centos7-candidate}
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test_docker_run_usage() {
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echo "Testing 'docker run' usage..."
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docker run --rm ${IMAGE_NAME} &>/dev/null
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}
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check_result() {
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local result="$1"
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if [[ "$result" != "0" ]]; then
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echo "STI image '${IMAGE_NAME}' test FAILED (exit code: ${result})"
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exit $result
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fi
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}
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# Verify the 'usage' script is working properly when running the base image with 'docker run ...'
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test_docker_run_usage
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check_result $?
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