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docs: add howto guide for defining schemas

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Support defining Schemas as dicts #939

docs: add howto guide for defining schemas
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firefoxci-taskcluster / docker-image-decision succeeded Apr 23, 2026 in 2m 49s

FirefoxCI (pull_request)

Build the docker image decision for use by dependent tasks (Treeherder push)

Details

View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster

Task Status

Started: 2026-04-23T19:54:40.740Z
Resolved: 2026-04-23T19:55:52.310Z
Task Execution Time: 1 minute, 11 seconds, 570 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: ETV2t0gDTXSPIiq1tqaXiQ
RunId: 0

Artifacts

- public/chain-of-trust.json
- public/chain-of-trust.json.sig
- public/image.tar.zst
- public/logs/certified.log
- public/logs/live_backing.log
- public/logs/live.log


[taskcluster 2026-04-23T19:54:40.794Z] Worker Type (taskgraph-1/images) settings:
[taskcluster 2026-04-23T19:54:40.794Z]   {
[taskcluster 2026-04-23T19:54:40.794Z]     "generic-worker": {
[taskcluster 2026-04-23T19:54:40.794Z]       "config": {
[taskcluster 2026-04-23T19:54:40.794Z]         "headlessTasks": true
[taskcluster 2026-04-23T19:54:40.794Z]       },
[taskcluster 2026-04-23T19:54:40.794Z]       "engine": "multiuser",
[taskcluster 2026-04-23T19:54:40.794Z]       "go-arch": "amd64",
[taskcluster 2026-04-23T19:54:40.794Z]       "go-os": "linux",
[taskcluster 2026-04-23T19:54:40.794Z]       "go-version": "go1.26.0",
[taskcluster 2026-04-23T19:54:40.794Z]       "release": "https://github.com/taskcluster/taskcluster/releases/tag/v97.0.1",
[taskcluster 2026-04-23T19:54:40.794Z]       "revision": "6519c127aad40a47b1412136d9a5797a76eca200",
[taskcluster 2026-04-23T19:54:40.794Z]       "source": "https://github.com/taskcluster/taskcluster/commits/6519c127aad40a47b1412136d9a5797a76eca200",
[taskcluster 2026-04-23T19:54:40.794Z]       "version": "97.0.1"
[taskcluster 2026-04-23T19:54:40.794Z]     },
[taskcluster 2026-04-23T19:54:40.794Z]     "image": "projects/taskcluster-imaging/global/images/gw-fxci-gcp-l1-2404-amd64-headless-googlecompute-2026-03-05",
[taskcluster 2026-04-23T19:54:40.794Z]     "instance-id": "2990760738312144451",
[taskcluster 2026-04-23T19:54:40.794Z]     "instance-type": "projects/887720501152/machineTypes/n2-standard-2",
[taskcluster 2026-04-23T19:54:40.794Z]     "local-ipv4": "10.128.4.18",
[taskcluster 2026-04-23T19:54:40.794Z]     "project-id": "fxci-production-level1-workers",

...(785 lines hidden)...

pygments             ------------------------------ 316.82 KiB/1.17 MiB
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   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠹ Preparing packages... (16/44)
charset-normalizer   ------------------------------ 149.49 KiB/149.49 KiB
chardet              ------------------------------ 187.03 KiB/194.71 KiB
propcache            ------------------------------ 199.65 KiB/199.65 KiB
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
multidict            ------------------------------ 248.32 KiB/248.32 KiB
rich                 ------------------------------ 178.92 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 333.50 KiB/368.22 KiB
pyyaml               ------------------------------ 446.89 KiB/782.84 KiB
pygments             ------------------------------ 316.82 KiB/1.17 MiB
aiohttp              ------------------------------ 318.74 KiB/1.66 MiB         












   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠹ Preparing packages... (16/44)
charset-normalizer   ------------------------------ 149.49 KiB/149.49 KiB
chardet              ------------------------------ 187.03 KiB/194.71 KiB
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
multidict            ------------------------------ 248.32 KiB/248.32 KiB
rich                 ------------------------------ 178.92 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 333.50 KiB/368.22 KiB
pyyaml               ------------------------------ 446.89 KiB/782.84 KiB
pygments             ------------------------------ 316.82 KiB/1.17 MiB
aiohttp              ------------------------------ 414.74 KiB/1.66 MiB         











   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠹ Preparing packages... (16/44)
charset-normalizer   ------------------------------ 149.49 KiB/149.49 KiB
chardet              ------------------------------ 187.03 KiB/194.71 KiB
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
rich                 ------------------------------ 178.92 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 333.50 KiB/368.22 KiB
pyyaml               ------------------------------ 446.89 KiB/782.84 KiB
pygments             ------------------------------ 316.82 KiB/1.17 MiB
aiohttp              ------------------------------ 414.74 KiB/1.66 MiB         










   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
chardet              ------------------------------ 187.03 KiB/194.71 KiB
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
rich                 ------------------------------ 178.92 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 349.50 KiB/368.22 KiB
pyyaml               ------------------------------ 574.89 KiB/782.84 KiB
pygments             ------------------------------ 332.82 KiB/1.17 MiB
aiohttp              ------------------------------ 574.74 KiB/1.66 MiB         









   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
chardet              ------------------------------ 194.71 KiB/194.71 KiB
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
rich                 ------------------------------ 202.87 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 368.22 KiB/368.22 KiB
pyyaml               ------------------------------ 766.89 KiB/782.84 KiB
pygments             ------------------------------ 346.01 KiB/1.17 MiB
aiohttp              ------------------------------ 894.74 KiB/1.66 MiB         









   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
rich                 ------------------------------ 218.87 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
yarl                 ------------------------------ 368.22 KiB/368.22 KiB
pyyaml               ------------------------------ 766.89 KiB/782.84 KiB
pygments             ------------------------------ 362.01 KiB/1.17 MiB
aiohttp              ------------------------------ 894.74 KiB/1.66 MiB         








   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
msgspec              ------------------------------ 219.65 KiB/219.65 KiB
rich                 ------------------------------ 230.29 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
pyyaml               ------------------------------ 782.84 KiB/782.84 KiB
pygments             ------------------------------ 362.01 KiB/1.17 MiB
aiohttp              ------------------------------ 910.74 KiB/1.66 MiB         







   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
rich                 ------------------------------ 230.29 KiB/302.70 KiB
tzdata               ------------------------------ 94.08 KiB/340.35 KiB
pyyaml               ------------------------------ 782.84 KiB/782.84 KiB
pygments             ------------------------------ 362.01 KiB/1.17 MiB
aiohttp              ------------------------------ 910.74 KiB/1.66 MiB         






   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
rich                 ------------------------------ 254.87 KiB/302.70 KiB
tzdata               ------------------------------ 110.08 KiB/340.35 KiB
pygments             ------------------------------ 412.82 KiB/1.17 MiB
aiohttp              ------------------------------ 990.74 KiB/1.66 MiB         





   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
tzdata               ------------------------------ 110.08 KiB/340.35 KiB
pygments             ------------------------------ 476.82 KiB/1.17 MiB
aiohttp              ------------------------------ 1006.74 KiB/1.66 MiB        




   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
tzdata               ------------------------------ 110.08 KiB/340.35 KiB
pygments             ------------------------------ 524.82 KiB/1.17 MiB
aiohttp              ------------------------------ 1.01 MiB/1.66 MiB           




   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
tzdata               ------------------------------ 126.08 KiB/340.35 KiB
pygments             ------------------------------ 604.82 KiB/1.17 MiB
aiohttp              ------------------------------ 1.65 MiB/1.66 MiB           




   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
tzdata               ------------------------------ 126.08 KiB/340.35 KiB
pygments             ------------------------------ 620.82 KiB/1.17 MiB         



   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (31/44)
tzdata               ------------------------------ 142.08 KiB/340.35 KiB
pygments             ------------------------------ 700.82 KiB/1.17 MiB         



   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (41/44)
tzdata               ------------------------------ 174.08 KiB/340.35 KiB
pygments             ------------------------------ 1020.82 KiB/1.17 MiB        



   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (41/44)
tzdata               ------------------------------ 206.08 KiB/340.35 KiB
pygments             ------------------------------ 1.12 MiB/1.17 MiB           



   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (41/44)
tzdata               ------------------------------ 206.08 KiB/340.35 KiB       


   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (41/44)
tzdata               ------------------------------ 254.08 KiB/340.35 KiB       


   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (41/44)                                                 

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠴ Preparing packages... (43/44)                                                 

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠦ Preparing packages... (43/44)                                                 

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠧ Preparing packages... (43/44)                                                 

      Built taskcluster-taskgraph @ file:///setup/taskgraph
⠧ Preparing packages... (43/44)                                                 
⠧  (44/44)                                                                      
Prepared 44 packages in 1.32s
░░░░░░░░░░░░░░░░░░░░ [0/0] Installing wheels...                                 
░░░░░░░░░░░░░░░░░░░░ [0/44] Installing wheels...                                
░░░░░░░░░░░░░░░░░░░░ [0/44] async-timeout==5.0.1                                
░░░░░░░░░░░░░░░░░░░░ [1/44] async-timeout==5.0.1                                
░░░░░░░░░░░░░░░░░░░░ [1/44] mdurl==0.1.2                                        
░░░░░░░░░░░░░░░░░░░░ [2/44] mdurl==0.1.2                                        
░░░░░░░░░░░░░░░░░░░░ [2/44] markdown-it-py==4.0.0                               
█░░░░░░░░░░░░░░░░░░░ [3/44] markdown-it-py==4.0.0                               
█░░░░░░░░░░░░░░░░░░░ [3/44] slugid==2.0.0                                       
█░░░░░░░░░░░░░░░░░░░ [4/44] slugid==2.0.0                                       
█░░░░░░░░░░░░░░░░░░░ [4/44] appdirs==1.4.4                                      
██░░░░░░░░░░░░░░░░░░ [5/44] appdirs==1.4.4                                      
██░░░░░░░░░░░░░░░░░░ [5/44] text-unidecode==1.3                                 
██░░░░░░░░░░░░░░░░░░ [6/44] text-unidecode==1.3                                 
██░░░░░░░░░░░░░░░░░░ [6/44] python-slugify==8.0.4                               
███░░░░░░░░░░░░░░░░░ [7/44] python-slugify==8.0.4                               
███░░░░░░░░░░░░░░░░░ [7/44] redo==3.0.0                                         
███░░░░░░░░░░░░░░░░░ [8/44] redo==3.0.0                                         
███░░░░░░░░░░░░░░░░░ [8/44] click==8.3.1                                        
████░░░░░░░░░░░░░░░░ [9/44] click==8.3.1                                        
██████████████████░░ [40/44] aiohttp==3.13.3                                    
Installed 44 packages in 84ms
 + aiohappyeyeballs==2.6.1
 + aiohttp==3.13.3
 + aiosignal==1.4.0
 + appdirs==1.4.4
 + arrow==1.4.0
 + async-timeout==5.0.1
 + attrs==25.4.0
 + binaryornot==0.4.4
 + certifi==2026.1.4
 + chardet==5.2.0
 + charset-normalizer==3.4.4
 + click==8.3.1
 + cookiecutter==2.6.0
 + frozenlist==1.8.0
 + giturlparse==0.14.0
 + idna==3.11
 + jinja2==3.1.6
 + json-e==4.8.1
 + markdown-it-py==4.0.0
 + markupsafe==3.0.3
 + mdurl==0.1.2
 + mohawk==1.1.0
 + mozilla-repo-urls==0.2.2
 + msgspec==0.20.0
 + multidict==6.7.1
 + orjson==3.11.7
 + propcache==0.4.1
 + pygments==2.19.2
 + python-dateutil==2.9.0.post0
 + python-slugify==8.0.4
 + pyyaml==6.0.3
 + redo==3.0.0
 + requests==2.32.5
 + rich==14.3.2
 + six==1.17.0
 + slugid==2.0.0
 + taskcluster==96.2.3
 + taskcluster-taskgraph==22.0.0 (from file:///setup/taskgraph)
 + taskcluster-urls==13.0.2
 + text-unidecode==1.3
 + tzdata==2025.3
 + urllib3==2.6.3
 + voluptuous==0.16.0
 + yarl==1.22.0
uv pip install --no-cache --system --break-system-packages --no-deps .
Using Python 3.13.5 environment at: /usr
⠋ Resolving dependencies...                                                     
⠙ Resolving dependencies...                                                     
⠋ Resolving dependencies...                                                     
⠙ Resolving dependencies...                                                     
⠙ Resolving dependencies...                                                     
⠙ taskcluster-taskgraph==22.0.0                                                 
⠙                                                                               
Resolved 1 package in 9ms
⠋ Preparing packages... (0/0)                                                   
⠋ Preparing packages... (0/1)                                                   
⠙ Preparing packages... (0/1)                                                   
   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠙ Preparing packages... (0/1)                                                   

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠹ Preparing packages... (0/1)                                                   

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠸ Preparing packages... (0/1)                                                   

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠼ Preparing packages... (0/1)                                                   

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠴ Preparing packages... (0/1)                                                   

   Building taskcluster-taskgraph @ file:///setup/taskgraph
⠦ Preparing packages... (0/1)                                                   

      Built taskcluster-taskgraph @ file:///setup/taskgraph
⠦ Preparing packages... (0/1)                                                   
⠦  (1/1)                                                                        
Prepared 1 package in 1.03s
Uninstalled 1 package in 0.55ms
░░░░░░░░░░░░░░░░░░░░ [0/0] Installing wheels...                                 
░░░░░░░░░░░░░░░░░░░░ [0/1] Installing wheels...                                 
░░░░░░░░░░░░░░░░░░░░ [0/1] taskcluster-taskgraph==22.0.0 (from file:///setup/tas
████████████████████ [1/1] taskcluster-taskgraph==22.0.0 (from file:///setup/tas
Installed 1 package in 4ms
 ~ taskcluster-taskgraph==22.0.0 (from file:///setup/taskgraph)
popd
/

apt-get clean
apt-get autoclean

Reading package lists... 0%

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Reading package lists... 94%

Reading package lists... 98%

Reading package lists... 98%

Reading package lists... 98%

Reading package lists... 98%

Reading package lists... 99%

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Reading package lists... Done


Building dependency tree... 0%

Building dependency tree... 0%

Building dependency tree... 50%

Building dependency tree... 50%

Building dependency tree... Done


Reading state information... 0% 

Reading state information... 0%

Reading state information... Done

rm -rf /var/lib/apt/lists/
rm -rf /setup
rm /tmp/uv-*.lock
INFO[0014] CMD ["/bin/bash", "--login"]                 
INFO[0014] Taking snapshot of full filesystem...        
INFO[0041] Skipping push to container registry due to --no-push flag 
[build-image] Repacking image.
Getting image source signatures
Writing manifest to image destination
[build-image] Compressing image.
[taskcluster 2026-04-23T19:55:46.776Z]                        Exit Code: 0
[taskcluster 2026-04-23T19:55:46.776Z]                        User Time: 19.94ms
[taskcluster 2026-04-23T19:55:46.776Z]                      Kernel Time: 30.497ms
[taskcluster 2026-04-23T19:55:46.776Z]                        Wall Time: 1m1.321113051s
[taskcluster 2026-04-23T19:55:46.776Z]  Average Available System Memory: 6.75 GiB
[taskcluster 2026-04-23T19:55:46.776Z]       Average System Memory Used: 1020.54 MiB
[taskcluster 2026-04-23T19:55:46.776Z]          Peak System Memory Used: 1.19 GiB
[taskcluster 2026-04-23T19:55:46.776Z]              Total System Memory: 7.75 GiB
[taskcluster 2026-04-23T19:55:46.776Z]                           Result: SUCCEEDED
[taskcluster 2026-04-23T19:55:46.777Z] === Task Finished ===
[taskcluster 2026-04-23T19:55:46.777Z] Task Duration: 1m1.321658559s