kaniko-action/action.yaml

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name: 'Kaniko Build & Push'
description: 'Builds a (multi-stage) Dockerfile using Kaniko and pushes it to container registry'
author: 'tertek'
inputs:
registry_user:
description: 'Username for the container registry authentication'
required: true
registry_token:
description: 'Password or Token for the container registry authentication'
required: true
dockerfile_path:
description: 'Relative path to the Dockerfile (e.g., ./test-1/Dockerfile)'
required: false
default: './Dockerfile'
target_stage:
description: 'Target stage to build in a multi-stage Dockerfile'
required: false
default: ''
destination_image:
description: 'The full image name and tag (e.g., my-repo/php-fpm:test)'
required: true
image_tag:
description: 'Name of the image tag, appended to the image name with :latest as default'
required: false
default: 'latest'
cache_repo:
description: 'Custom path for Kaniko cache layers'
required: false
default: ''
build_args:
description: 'Optional build arguments separated by spaces or newlines (e.g., KEY=VAL)'
required: false
default: ''
multi_stage_caching:
description: 'Enforce cache elision feature flags at the binary execution layer'
required: false
default: 'true'
runs:
using: 'composite'
steps:
- name: Build and Push with Kaniko
shell: sh
env:
INPUT_BUILD_ARGS: ${{ inputs.build_args }}
run: |
# # 0. Enforce cache elision feature flags at the binary execution layer
# # ONLY FOR DEVELOP
# export FF_KANIKO_SKIP_CACHED_STAGES=true
# export FF_KANIKO_INFER_CROSS_STAGE_CACHE_KEY=true
# export FF_KANIKO_CACHE_LOOKAHEAD=true
# export FF_KANIKO_ROLLING_CACHE_KEY=true
# 1. Initialize Kaniko Docker config directory
mkdir -p /kaniko/.docker
# 2. Authenticate cleanly using the full server URL string
echo "{\"auths\":{\"${{ forgejo.server_url }}\":{\"username\":\"${{ inputs.registry_user }}\",\"password\":\"${{ inputs.registry_token }}\"}}}" > /kaniko/.docker/config.json
# 3. Clean up the domain name specifically for destinations and cache routing pointers
REGISTRY_DOMAIN=$(echo "${{ forgejo.server_url }}" | sed -e 's/https:\/\///g' -e 's/http:\/\///g')
# 4. Construct execution arguments dynamically based on optional inputs
TARGET_ARG=""
if [ -n "${{ inputs.target_stage }}" ]; then
TARGET_ARG="--target=${{ inputs.target_stage }}"
fi
CACHE_REPO_ARG="$REGISTRY_DOMAIN/${{ forgejo.repository }}/cache"
if [ -n "${{ inputs.cache_repo }}" ]; then
CACHE_REPO_ARG="${{ inputs.cache_repo }}"
fi
DYNAMIC_BUILD_ARGS=""
for arg in $INPUT_BUILD_ARGS; do
DYNAMIC_BUILD_ARGS="$DYNAMIC_BUILD_ARGS --build-arg=$arg"
done
# 5. Fire Kaniko executor
/kaniko/executor \
--context="dir://${{ forgejo.workspace }}" \
--dockerfile="${{ forgejo.workspace }}/${{ inputs.dockerfile_path }}" \
$TARGET_ARG \
$DYNAMIC_BUILD_ARGS \
--destination="$REGISTRY_DOMAIN/${{ inputs.destination_image }}:${{ inputs.image_tag }}" \
--cache=false
# --use-new-run=true \
# --snapshot-mode=redo \
# --cache-repo="$CACHE_REPO_ARG"