A collection of frequently updated CI-ready Docker images with package metadata already downloaded and CI-related tools already preinstalled.

The following Docker Hub repositories host these CI-ready images:

• https://hub.docker.com/repository/docker/ciready/alpine
• https://hub.docker.com/repository/docker/ciready/almalinux
• https://hub.docker.com/repository/docker/ciready/archlinux
• https://hub.docker.com/repository/docker/ciready/centos
• https://hub.docker.com/repository/docker/ciready/debian
• https://hub.docker.com/repository/docker/ciready/opensuse
• https://hub.docker.com/repository/docker/ciready/ubuntu

Docker image tags generated by this repository contain a suffix indicating the target programming language the image is prepared for.

The following target language suffixes are provided:

• -ci-c

In your CI job specification (i.e. GitHub workflow), perform the following changes:

• Change the image repository and tag of the container
• Remove all commong build software intallation steps (things like make, gcc, libtool etc.)

Example:

diff --git a/.github/workflows/build-qa-verify-make-targets-prefix.yml b/.github/workflows/build-qa-verify-make-targets-prefix.yml
index 44bef46..9b95c76 100644
--- a/.github/workflows/build-qa-verify-make-targets-prefix.yml
+++ b/.github/workflows/build-qa-verify-make-targets-prefix.yml
@@ -54,7 +54,7 @@ jobs:
 
 
     runs-on: ubuntu-latest
-    container: ubuntu:22.04
+    container: ciready/ubuntu:22.04-ci-c
 
 
 
@@ -65,10 +65,6 @@ jobs:
 
 
 
-      - run: |
-          DEBIAN_FRONTEND=noninteractive apt-get update -y
-          DEBIAN_FRONTEND=noninteractive apt-get install -y git build-essential [...]
-
       - uses: actions/checkout@v2
       - run: ./configure
       - run: make

In CI systems, every invocation of Docker-based run consumes time by performing the initial package metadata updates and CI-related package installations, wasting precious time and bandwidth resources.

Implementing these images in Snoopy's CI resulted in a 15-20% CI job run time reduction across the board, and around 75% job run time reduction for OpenSUSE-related jobs.