.dockerfile
2 claimants
2 primary
0 secondary
shared primary (2)
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
637.1K
total occurrences
318.4K
since 2019 (50.0%)
1970–2023
years active
Case variants in archive: .Dockerfile (465.7K), .dockerfile (169.9K), .DockerFile (1.2K), .dockerFile (148), .DOCKERFILE (102), .DockerFIle (3) — aggregated above.
Attribution status
This extension is attributed to docker; dockerfile; dockerfile; dockerfile as primary by 4 authoritative claims.
Claimants (4)
Languages that list
.dockerfile among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| docker | pygments | primary |
| dockerfile | linguist | primary |
| dockerfile | pygments | primary |
| dockerfile | wikidata | primary |
Wikidata says… (1)
File formats, image formats, audio codecs and other non-PL
entities that claim
.dockerfile on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| Dockerfile Q105856101top match file format | file format | — | text/x-dockerfile; text/x-dockerfile-config | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .dockerfile in our local mirror yet.