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‎.github/workflows/build-wsl-image.yml

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name: Check, Release, Build and Publish WSL2 Image
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name: Check, Build & Publish WSL2 Image
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33
on:
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# Nightly check at 00:00 UTC
45
schedule:
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# Run daily at midnight UTC
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- cron: '0 0 * * *'
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# Manual “Run workflow” button
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workflow_dispatch:
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# Allow manual triggering
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# When you click “Publish release” in the UI
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release:
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types: [published]
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permissions:
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contents: write
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contents: write # required for tag push & gh‑release
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jobs:
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# ------------------------------------------------------------
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# 1. Decide whether we need a new release tag
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# (runs on schedule or workflow‑dispatch, never on release)
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# ------------------------------------------------------------
1621
check-and-release:
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runs-on: ubuntu-latest
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# Skip this job if triggered by a release event
1922
if: github.event_name != 'release'
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runs-on: ubuntu-latest
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outputs:
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NEED_RELEASE: ${{ steps.release.outputs.NEED_RELEASE }}
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NEW_TAG: ${{ steps.release.outputs.NEW_TAG }}
25+
NEED_RELEASE: ${{ steps.decide.outputs.NEED_RELEASE }}
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NEW_TAG: ${{ steps.decide.outputs.NEW_TAG }}
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steps:
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- name: Checkout Repository
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- name: Checkout repository ⚡
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uses: actions/checkout@v4
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with:
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fetch-depth: 0 # Fetch all history to get tags
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fetch-depth: 0 # get full history
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fetch-tags: true # still unreliable; we force‑fetch below
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34+
- name: Ensure ALL tags are present
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run: git fetch --tags --prune --force
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29-
- name: Get latest containerlab version
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id: containerlab
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- name: Get latest Containerlab version
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id: clab
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shell: bash
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run: |
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# Get latest version by following the redirect to the latest release
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LATEST_URL=$(curl -sLI -o /dev/null -w '%{url_effective}' https://github.com/srl-labs/containerlab/releases/latest)
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echo "Latest release URL: $LATEST_URL"
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# Extract version from URL
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CONTAINERLAB_LATEST=$(echo $LATEST_URL | rev | cut -d'/' -f1 | rev)
38-
39-
# Remove the 'v' prefix
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CONTAINERLAB_VERSION=${CONTAINERLAB_LATEST#v}
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echo "CONTAINERLAB_VERSION=$CONTAINERLAB_VERSION" >> $GITHUB_OUTPUT
42-
echo "Latest containerlab version: $CONTAINERLAB_VERSION"
43-
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- name: Get latest WSL release version
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id: current_release
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set -euo pipefail
42+
latest_url=$(curl -sLI -o /dev/null -w '%{url_effective}' \
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https://github.com/srl-labs/containerlab/releases/latest)
44+
ver=${latest_url##*/}
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echo "CONTAINERLAB_VER=${ver#v}" >> "$GITHUB_OUTPUT"
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echo "Found Containerlab ${ver#v}"
47+
48+
- name: Get latest WSL image tag
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id: current
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shell: bash
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run: |
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# Get the latest release tag from this repository
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LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "none")
49-
echo "LATEST_TAG=$LATEST_TAG" >> $GITHUB_OUTPUT
50-
51-
if [[ "$LATEST_TAG" == "none" ]]; then
52-
echo "No releases found"
53-
echo "CURRENT_CONTAINERLAB_VERSION=none" >> $GITHUB_OUTPUT
54-
echo "CURRENT_WSL_VERSION=none" >> $GITHUB_OUTPUT
55-
else
56-
# Parse the version (format: 0.65.1-1.0)
57-
CURRENT_CONTAINERLAB_VERSION=$(echo $LATEST_TAG | cut -d'-' -f1)
58-
CURRENT_WSL_VERSION=$(echo $LATEST_TAG | cut -d'-' -f2)
59-
echo "CURRENT_CONTAINERLAB_VERSION=$CURRENT_CONTAINERLAB_VERSION" >> $GITHUB_OUTPUT
60-
echo "CURRENT_WSL_VERSION=$CURRENT_WSL_VERSION" >> $GITHUB_OUTPUT
61-
echo "Current containerlab version: $CURRENT_CONTAINERLAB_VERSION"
62-
echo "Current WSL version: $CURRENT_WSL_VERSION"
52+
set -euo pipefail
53+
tag=$(git tag --list --sort=-v:refname | head -n1 || true)
54+
echo "LATEST_TAG=$tag" >> "$GITHUB_OUTPUT"
55+
56+
if [[ -z "$tag" ]]; then
57+
echo "CONTAINERLAB_CUR=none" >> "$GITHUB_OUTPUT"
58+
echo "WSL_CUR=none" >> "$GITHUB_OUTPUT"
59+
exit 0
6360
fi
6461
65-
- name: Determine if release is needed
66-
id: release
62+
echo "Latest tag is $tag"
63+
64+
echo "CONTAINERLAB_CUR=${tag%%-*}" >> "$GITHUB_OUTPUT"
65+
echo "WSL_CUR=${tag#*-}" >> "$GITHUB_OUTPUT"
66+
67+
- name: Decide whether to cut a new tag
68+
id: decide
69+
shell: bash
6770
run: |
68-
NEED_RELEASE="false"
69-
NEW_WSL_VERSION="1.0"
71+
set -euo pipefail
7072
71-
# Always build when manually triggered via workflow_dispatch
72-
if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
73-
NEED_RELEASE="true"
74-
echo "Manual trigger detected - forcing release"
75-
# Check if containerlab version is different
76-
elif [[ "${{ steps.current_release.outputs.CURRENT_CONTAINERLAB_VERSION }}" != "${{ steps.containerlab.outputs.CONTAINERLAB_VERSION }}" ]]; then
77-
NEED_RELEASE="true"
78-
elif [[ "${{ steps.current_release.outputs.CURRENT_CONTAINERLAB_VERSION }}" == "none" ]]; then
79-
# No previous releases
80-
NEED_RELEASE="true"
81-
fi
73+
need_release="false"
74+
new_clab="${{ steps.clab.outputs.CONTAINERLAB_VER }}"
75+
cur_clab="${{ steps.current.outputs.CONTAINERLAB_CUR }}"
76+
cur_wsl="${{ steps.current.outputs.WSL_CUR }}"
77+
new_wsl="1.0"
8278
83-
# For manual triggers with no version change, use current containerlab version with bumped WSL version
84-
if [[ "${{ github.event_name }}" == "workflow_dispatch" && "${{ steps.current_release.outputs.CURRENT_CONTAINERLAB_VERSION }}" == "${{ steps.containerlab.outputs.CONTAINERLAB_VERSION }}" ]]; then
85-
# Increment the WSL version
86-
if [[ "${{ steps.current_release.outputs.CURRENT_WSL_VERSION }}" != "none" ]]; then
87-
CURRENT_WSL_VERSION="${{ steps.current_release.outputs.CURRENT_WSL_VERSION }}"
88-
# Extract major and minor version parts
89-
WSL_MAJOR=$(echo $CURRENT_WSL_VERSION | cut -d'.' -f1)
90-
WSL_MINOR=$(echo $CURRENT_WSL_VERSION | cut -d'.' -f2)
91-
# Increment minor version
92-
NEW_WSL_MINOR=$((WSL_MINOR + 1))
93-
NEW_WSL_VERSION="$WSL_MAJOR.$NEW_WSL_MINOR"
94-
fi
95-
echo "Using existing containerlab version with incremented WSL version: $NEW_WSL_VERSION"
79+
bump_wsl () {
80+
local major=${cur_wsl%%.*}
81+
local minor=${cur_wsl#*.}
82+
new_wsl="${major}.$((minor+1))"
83+
}
84+
85+
if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
86+
need_release="true"
87+
[[ "$cur_clab" == "$new_clab" && "$cur_wsl" != "none" ]] && bump_wsl
88+
elif [[ "$cur_clab" == "none" ]]; then
89+
need_release="true"
90+
elif [[ "$cur_clab" != "$new_clab" ]]; then
91+
need_release="true"
9692
fi
9793
98-
# Set output variables
99-
echo "NEED_RELEASE=$NEED_RELEASE" >> $GITHUB_OUTPUT
100-
echo "NEW_TAG=${{ steps.containerlab.outputs.CONTAINERLAB_VERSION }}-$NEW_WSL_VERSION" >> $GITHUB_OUTPUT
94+
echo "NEED_RELEASE=$need_release" >> "$GITHUB_OUTPUT"
10195
102-
if [[ "$NEED_RELEASE" == "true" ]]; then
103-
echo "Release needed: ${{ steps.containerlab.outputs.CONTAINERLAB_VERSION }}-$NEW_WSL_VERSION"
96+
if [[ "$need_release" == "true" ]]; then
97+
new_tag="${new_clab}-${new_wsl}"
98+
echo "NEW_TAG=$new_tag" >> "$GITHUB_OUTPUT"
99+
echo "Releasing $new_tag"
104100
else
105-
echo "No release needed. Latest containerlab version already supported."
101+
echo "No release required"
106102
fi
107103
108-
- name: Create Release Tag
109-
if: steps.release.outputs.NEED_RELEASE == 'true'
104+
- name: Create Git tag
105+
if: steps.decide.outputs.NEED_RELEASE == 'true'
110106
run: |
111107
git config --local user.email "[email protected]"
112-
git config --local user.name "GitHub Actions"
113-
git tag -a ${{ steps.release.outputs.NEW_TAG }} -m "Release ${{ steps.release.outputs.NEW_TAG }}"
114-
git push origin ${{ steps.release.outputs.NEW_TAG }}
108+
git config --local user.name "GitHub Actions"
109+
git tag -a "${{ steps.decide.outputs.NEW_TAG }}" \
110+
-m "Release ${{ steps.decide.outputs.NEW_TAG }}"
111+
git push origin "${{ steps.decide.outputs.NEW_TAG }}"
115112
116-
- name: Create GitHub Release
117-
if: steps.release.outputs.NEED_RELEASE == 'true'
113+
- name: Draft GitHub Release
114+
if: steps.decide.outputs.NEED_RELEASE == 'true'
118115
uses: softprops/action-gh-release@v1
119116
with:
120-
tag_name: ${{ steps.release.outputs.NEW_TAG }}
121-
name: "Release ${{ steps.release.outputs.NEW_TAG }}"
117+
tag_name: ${{ steps.decide.outputs.NEW_TAG }}
118+
name: "Release ${{ steps.decide.outputs.NEW_TAG }}"
122119
body: |
123-
WSL2 image for containerlab version ${{ steps.containerlab.outputs.CONTAINERLAB_VERSION }}
124-
125-
${{ github.event_name == 'workflow_dispatch' && 'This release was manually triggered.' || 'This release was automatically generated based on the latest containerlab release.' }}
120+
WSL2 image for Containerlab ${{ steps.clab.outputs.CONTAINERLAB_VER }}
121+
122+
${{ github.event_name == 'workflow_dispatch' && 'Manually triggered.' || 'Automated nightly release.' }}
126123
draft: false
127124
prerelease: false
128125

129-
# This job runs when triggered by a release event (manual release)
130-
build-and-publish-from-release:
131-
runs-on: ubuntu-22.04
132-
if: github.event_name == 'release'
133-
steps:
134-
- name: Checkout Repository
135-
uses: actions/checkout@v4
136-
137-
- name: Set up Docker Buildx
138-
uses: docker/setup-buildx-action@v2
139-
140-
- name: Build Docker Image
141-
run: |
142-
docker build . --tag clab-wsl-debian
143-
144-
- name: Run Docker Container and Export Filesystem
145-
run: |
146-
# Run the Docker container
147-
docker run -t --name wsl_export clab-wsl-debian ls /
148-
# Export the container's filesystem to a tar file
149-
docker export wsl_export -o clab.tar
150-
# Remove the container to clean up
151-
docker rm wsl_export
152-
153-
- name: Rename tar to .wsl file
154-
run: |
155-
# Rename the tar file to have a .wsl extension
156-
mv clab.tar clab.wsl
157-
158-
- name: Upload WSL Image Artifact
159-
uses: actions/upload-artifact@v4
160-
with:
161-
name: clab-wsl2
162-
path: clab.wsl
163-
164-
- name: Get release tag
165-
id: get_tag
166-
run: |
167-
# For releases triggered by the release event
168-
REF_NAME="${{ github.ref }}"
169-
TAG="${REF_NAME#refs/tags/}"
170-
echo "Using release tag: $TAG"
171-
echo "TAG=$TAG" >> $GITHUB_OUTPUT
172-
173-
- name: Upload Release Asset
174-
uses: svenstaro/upload-release-action@v2
175-
with:
176-
repo_token: ${{ secrets.GITHUB_TOKEN }}
177-
file: clab.wsl
178-
asset_name: clab-${{ steps.get_tag.outputs.TAG }}.wsl
179-
tag: ${{ steps.get_tag.outputs.TAG }}
180-
181-
# This job runs when triggered by a schedule or workflow_dispatch event and a release is needed
182-
build-and-publish-from-check:
126+
# ------------------------------------------------------------
127+
# 2. Build & upload WSL image when we *have* a tag
128+
# ------------------------------------------------------------
129+
build-and-publish:
130+
needs: check-and-release
131+
if: needs.check-and-release.outputs.NEED_RELEASE == 'true' || github.event_name == 'release'
183132
runs-on: ubuntu-22.04
184-
needs: [check-and-release]
185-
if: needs.check-and-release.outputs.NEED_RELEASE == 'true'
186133
steps:
187-
- name: Checkout Repository
188-
uses: actions/checkout@v4
134+
- uses: actions/checkout@v4
189135

190-
- name: Set up Docker Buildx
191-
uses: docker/setup-buildx-action@v2
136+
- uses: docker/setup-buildx-action@v2
192137

193-
- name: Build Docker Image
194-
run: |
195-
docker build . --tag clab-wsl-debian
138+
- name: Build Docker image
139+
run: docker build . -t clab-wsl-debian
196140

197-
- name: Run Docker Container and Export Filesystem
141+
- name: Export container filesystem ➜ .wsl
198142
run: |
199-
# Run the Docker container
200143
docker run -t --name wsl_export clab-wsl-debian ls /
201-
# Export the container's filesystem to a tar file
202-
docker export wsl_export -o clab.tar
203-
# Remove the container to clean up
204-
docker rm wsl_export
205-
206-
- name: Rename tar to .wsl file
207-
run: |
208-
# Rename the tar file to have a .wsl extension
209-
mv clab.tar clab.wsl
144+
docker export wsl_export -o clab.tar
145+
docker rm wsl_export
146+
mv clab.tar clab.wsl
210147
211-
- name: Upload WSL Image Artifact
212-
uses: actions/upload-artifact@v4
148+
- uses: actions/upload-artifact@v4
213149
with:
214150
name: clab-wsl2
215151
path: clab.wsl
216152

217-
- name: Get release tag
218-
id: get_tag
153+
- name: Determine tag name
154+
id: tag
219155
run: |
220-
# For releases created by the check-and-release job
221-
echo "Using new tag: ${{ needs.check-and-release.outputs.NEW_TAG }}"
222-
echo "TAG=${{ needs.check-and-release.outputs.NEW_TAG }}" >> $GITHUB_OUTPUT
156+
if [[ "${{ github.event_name }}" == "release" ]]; then
157+
echo "TAG=${GITHUB_REF##*/}" >> "$GITHUB_OUTPUT"
158+
else
159+
echo "TAG=${{ needs.check-and-release.outputs.NEW_TAG }}" >> "$GITHUB_OUTPUT"
160+
fi
223161
224-
- name: Upload Release Asset
162+
- name: Upload release asset
225163
uses: svenstaro/upload-release-action@v2
226164
with:
227165
repo_token: ${{ secrets.GITHUB_TOKEN }}
228166
file: clab.wsl
229-
asset_name: clab-${{ steps.get_tag.outputs.TAG }}.wsl
230-
tag: ${{ steps.get_tag.outputs.TAG }}
167+
asset_name: clab-${{ steps.tag.outputs.TAG }}.wsl
168+
tag: ${{ steps.tag.outputs.TAG }}

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