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2026-06-12 09:25:35 +02:00
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.gitea/workflows/build.yaml Normal file
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name: 🏗️ Build Container Image
on:
workflow_call:
inputs:
# --- Required ---
image_name:
description: 'Image name without registry/org (e.g. ansible-act-runner)'
required: true
type: string
dockerfile_path:
description: 'Path to Dockerfile relative to repo root (e.g. docker/Dockerfile)'
required: true
type: string
context_path:
description: 'Build context directory relative to repo root (e.g. docker/)'
required: true
type: string
# --- Optional overrides ---
registry:
description: 'Registry to push to (default: gitea.mod.home)'
required: false
type: string
default: 'gitea.mod.home'
image_org:
description: 'Registry org/namespace (default: calling repo owner)'
required: false
type: string
default: ''
extra_tag:
description: 'Additional tag besides latest and SHA (e.g. stable)'
required: false
type: string
default: ''
no_cache:
description: 'Disable build cache'
required: false
type: boolean
default: false
secrets:
TOKEN:
required: true
# Optional — override default REGISTRY_USER/REGISTRY_PASSWORD
REGISTRY_USER_OVERRIDE:
required: false
REGISTRY_PASSWORD_OVERRIDE:
required: false
jobs:
build:
# Runs directly on runner host (docker:host)
# Kaniko executor available via tools volume (initContainer in deployment)
runs-on: docker
steps:
- name: 🔎 Checkout
run: |
git clone \
--depth 1 \
--branch "${{ gitea.ref_name }}" \
"http://${{ secrets.TOKEN }}@gitea.mod.home/${{ gitea.repository_owner }}/${{ gitea.event.repository.name }}.git" \
/workspace
- name: 🏷️ Resolve Image Destination
id: meta
run: |
# Registry
REGISTRY="${{ inputs.registry }}"
# Org: use override if provided, otherwise calling repo owner
ORG="${{ inputs.image_org }}"
if [ -z "${ORG}" ]; then
ORG="${{ gitea.repository_owner }}"
fi
# Credentials: use override if provided, otherwise defaults
USER="${{ secrets.REGISTRY_USER_OVERRIDE }}"
if [ -z "${USER}" ]; then
USER="${{ secrets.REGISTRY_USER }}"
fi
PASS="${{ secrets.REGISTRY_PASSWORD_OVERRIDE }}"
if [ -z "${PASS}" ]; then
PASS="${{ secrets.REGISTRY_PASSWORD }}"
fi
IMAGE="${REGISTRY}/${ORG}/${{ inputs.image_name }}"
SHORT_SHA="${{ gitea.sha }}"
SHORT_SHA="${SHORT_SHA:0:8}"
echo "image=${IMAGE}" >> $GITHUB_OUTPUT
echo "tag_latest=${IMAGE}:latest" >> $GITHUB_OUTPUT
echo "tag_sha=${IMAGE}:${SHORT_SHA}" >> $GITHUB_OUTPUT
echo "short_sha=${SHORT_SHA}" >> $GITHUB_OUTPUT
echo "registry=${REGISTRY}" >> $GITHUB_OUTPUT
echo "user=${USER}" >> $GITHUB_OUTPUT
echo "pass=${PASS}" >> $GITHUB_OUTPUT
- name: 🔑 Create Kaniko Registry Config
run: |
mkdir -p /kaniko/.docker
AUTH=$(echo -n "${{ steps.meta.outputs.user }}:${{ steps.meta.outputs.pass }}" | base64)
cat > /kaniko/.docker/config.json << EOF
{
"auths": {
"${{ steps.meta.outputs.registry }}": {
"auth": "${AUTH}"
}
}
}
EOF
- name: 🔨 Build + Push Image
run: |
# Build extra destinations
DESTINATIONS="--destination ${{ steps.meta.outputs.tag_latest }} \
--destination ${{ steps.meta.outputs.tag_sha }}"
if [ -n "${{ inputs.extra_tag }}" ]; then
DESTINATIONS="${DESTINATIONS} --destination ${{ steps.meta.outputs.image }}:${{ inputs.extra_tag }}"
fi
NO_CACHE=""
if [ "${{ inputs.no_cache }}" = "true" ]; then
NO_CACHE="--no-push-cache --cache=false"
fi
/kaniko/executor \
--context=dir:///workspace/${{ inputs.context_path }} \
--dockerfile=/workspace/${{ inputs.dockerfile_path }} \
${DESTINATIONS} \
${NO_CACHE} \
--insecure \
--skip-tls-verify \
--compressed-caching=false
- name: 📨 Telegram Notification
if: always()
run: |
STATUS="${{ job.status }}"
IMAGE="${{ steps.meta.outputs.tag_latest }}"
SHA="${{ steps.meta.outputs.short_sha }}"
TEXT="🏗️ Image Build: ${IMAGE}%0ASHA: ${SHA}%0AStatus: ${STATUS}"
curl -s -X POST \
"https://api.telegram.org/bot${{ secrets.TELEGRAM_BOT_TOKEN }}/sendMessage" \
-d "chat_id=${{ secrets.TELEGRAM_CHAT_ID }}" \
-d "text=${TEXT}"

173
README.md
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# image-builder # image-builder
Reusable Gitea Actions workflow for building and pushing container images using
[Kaniko](https://github.com/GoogleContainerTools/kaniko). No Docker daemon
required — Kaniko runs directly on the runner host and handles both build and
push in a single step.
---
## How It Works
```
Calling repo (e.g. ansible/ansible-runner)
→ workflow_call → docker/image-builder
→ Kaniko builds Dockerfile
→ Pushes to gitea.mod.home/<calling_org>/<image_name>:latest
→ Pushes to gitea.mod.home/<calling_org>/<image_name>:<sha>
```
Kaniko is available on the runner host via the `tools` EmptyDir volume,
populated by the `install-build-tools` initContainer in the act runner
deployment.
---
## Usage
### Minimal — push to Gitea Registry
```yaml
# .gitea/workflows/build-myimage.yaml in your repo
name: 🏗️ Build My Image
on:
push:
branches: [main]
paths:
- 'docker/Dockerfile'
workflow_dispatch:
jobs:
build:
uses: docker/image-builder/.gitea/workflows/build.yaml@main
with:
image_name: my-image # → gitea.mod.home/<your_org>/my-image
dockerfile_path: docker/Dockerfile
context_path: docker/
secrets:
TOKEN: ${{ secrets.TOKEN }}
```
### With extra tag
```yaml
jobs:
build:
uses: docker/image-builder/.gitea/workflows/build.yaml@main
with:
image_name: my-image
dockerfile_path: docker/Dockerfile
context_path: docker/
extra_tag: stable
secrets:
TOKEN: ${{ secrets.TOKEN }}
```
### Push to Docker Hub
```yaml
jobs:
build:
uses: docker/image-builder/.gitea/workflows/build.yaml@main
with:
image_name: myuser/my-image
registry: registry-1.docker.io
dockerfile_path: docker/Dockerfile
context_path: docker/
secrets:
TOKEN: ${{ secrets.TOKEN }}
REGISTRY_USER_OVERRIDE: ${{ secrets.DOCKERHUB_USER }}
REGISTRY_PASSWORD_OVERRIDE: ${{ secrets.DOCKERHUB_TOKEN }}
```
### Force rebuild without cache
```yaml
with:
image_name: my-image
dockerfile_path: docker/Dockerfile
context_path: docker/
no_cache: true
```
---
## Inputs
| Input | Required | Default | Description |
|-------|----------|---------|-------------|
| `image_name` | ✅ | — | Image name without registry/org |
| `dockerfile_path` | ✅ | — | Path to Dockerfile relative to repo root |
| `context_path` | ✅ | — | Build context directory relative to repo root |
| `registry` | ❌ | `gitea.mod.home` | Target registry |
| `image_org` | ❌ | calling repo owner | Registry org/namespace |
| `extra_tag` | ❌ | `''` | Additional tag besides `latest` and SHA |
| `no_cache` | ❌ | `false` | Disable Kaniko build cache |
## Secrets
| Secret | Required | Description |
|--------|----------|-------------|
| `TOKEN` | ✅ | Gitea access token for checkout |
| `REGISTRY_USER_OVERRIDE` | ❌ | Override registry username |
| `REGISTRY_PASSWORD_OVERRIDE` | ❌ | Override registry password |
Secrets `REGISTRY_USER` and `REGISTRY_PASSWORD` must be set at the
**`docker` org level** in Gitea. All other repos inherit them automatically.
---
## Required Secrets (docker Org)
Set these in Gitea → `docker` org → Settings → Secrets:
| Secret | Description |
|--------|-------------|
| `REGISTRY_USER` | Gitea username for container registry login |
| `REGISTRY_PASSWORD` | Gitea access token with `package:write` scope |
| `TELEGRAM_BOT_TOKEN` | Telegram bot token for build notifications |
| `TELEGRAM_CHAT_ID` | Telegram chat ID for build notifications |
---
## Runner Requirements
The act runner deployment must have the `install-build-tools` initContainer
which copies the Kaniko executor binary into the `tools` EmptyDir volume:
```yaml
initContainers:
- name: install-build-tools
image: gcr.io/kaniko-project/executor:latest
command:
- /bin/sh
- -c
- cp /kaniko/executor /tools/executor && chmod +x /tools/executor
volumeMounts:
- name: tools
mountPath: /tools
```
The runner must have the `docker` label registered:
```yaml
# configmap.yaml
labels:
- "docker:host"
```
---
## Image Naming Convention
| Calling repo | image_name | Result |
|-------------|------------|--------|
| `ansible/ansible-runner` | `ansible-act-runner` | `gitea.mod.home/ansible/ansible-act-runner:latest` |
| `ansible/ansible-runner` | `ubuntu-act-runner` | `gitea.mod.home/ansible/ubuntu-act-runner:latest` |
| any repo | `myimage` with `image_org: shared` | `gitea.mod.home/shared/myimage:latest` |
---
## Roadmap
- [ ] TLS for Gitea registry — remove `--insecure` flag once cert-manager CA is in place
- [ ] Multi-arch builds via Kaniko cross-compilation