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Dockette / Dummy

\n\n

\n 🐳 Dummy Docker images for testing. Start with dockette/dummy:mcp, an MCP server with 2 tools.\n

\n\n

\n🕹 f3l1x.io | 💻 f3l1x | 🐦 @xf3l1x\n

\n\n

\n $\"GitHub$ \n $\"Docker$ \n $\"GitHub$ \n $\"Support/Discussions\"$ \n

\n\n-----\n\n## Motivation\n\n`dockette/dummy` holds small images that do almost nothing. Use them to test a client, a gateway,\nor a proxy, without a real backend.\n\nEvery image is published to Docker Hub as [`dockette/dummy`](https://hub.docker.com/r/dockette/dummy),\none tag per variant. Each variant lives in its own folder in this repository.\n\n| Tag | Folder | Description |\n| ---------------------- | ------- | ---------------------------------------------- |\n| **`mcp`** | `mcp/` | MCP server with 2 tools, built with [Bun](https://bun.sh). |\n\n## `dockette/dummy:mcp`\n\nA minimal MCP server. It answers 2 questions only: who it is and what time it is. The server\nspeaks the [Streamable HTTP](https://modelcontextprotocol.io/specification/basic/transports)\ntransport on `/mcp` in stateless mode.\n\n### Tools\n\n| Tool | Arguments | Returns |\n| -------- | --------- | --------------------------------------------------- |\n| `whoami` | none | The value of the `MCP_WHO` environment variable. |\n| `time` | none | The current time as an ISO-8601 timestamp (UTC). |\n\n### Usage\n\n```bash\ndocker run --rm -p 3000:3000 -e MCP_WHO=alice dockette/dummy:mcp\n```\n\nOr with Docker Compose:\n\n```yaml\nservices:\n dummy:\n image: dockette/dummy:mcp\n ports:\n - 3000:3000\n environment:\n - MCP_WHO=alice\n```\n\nAdd the server to your MCP client (Claude Code, Cursor, …):\n\n```json\n{\n \"mcpServers\": {\n \"dummy\": {\n \"url\": \"http://localhost:3000/mcp\"\n }\n }\n}\n```\n\nOr call it with `curl`:\n\n```bash\ncurl -sS http://localhost:3000/mcp \\\n -H 'Content-Type: application/json' \\\n -H 'Accept: application/json, text/event-stream' \\\n -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"tools/call\",\"params\":{\"name\":\"whoami\",\"arguments\":{}}}'\n```\n\n### Configuration\n\n| Variable | Default | Description |\n| ---------- | ------- | ---------------------------------------- |\n| `MCP_WHO` | `dummy` | The text that the `whoami` tool returns. |\n| `MCP_PORT` | `3000` | The HTTP port that the server listens on. |\n\n### Endpoints\n\n| Endpoint | Method | Description |\n| --------- | ------ | --------------------------------- |\n| `/mcp` | `POST` | MCP Streamable HTTP transport. |\n| `/health` | `GET` | Health check. Returns `200` JSON. |\n\n## Development\n\nEvery target works on one variant. `DOCKER_VARIANT` selects it and defaults to `mcp`.\n\n```bash\nmake install # install dependencies (bun)\nmake dev # run the server with a file watcher\nmake test # run the tests (bun test)\nmake typecheck # run the TypeScript compiler\n\nmake build # build the Docker image (dockette/dummy:mcp)\nmake test-docker # smoke test the Docker image\nmake push # build and push a multi-arch image to Docker Hub\n```\n\nAdd a variant with a new folder and a `Dockerfile` in it, then add the folder name to the\n`image` matrix in [`.github/workflows/docker.yml`](.github/workflows/docker.yml).\n\nSee [how to contribute](https://contributte.org/contributing.html) to this package.\n\nThis package is currently maintaining by these authors.\n\n\n

\n\n\n-----\n\nConsider to [support](https://github.com/sponsors/f3l1x) **f3l1x**. Also thank you for using this package.\n","has_starred","hub_user","immutable_tags_settings",{"_75":11,"_76":77},"enabled","rules",[78],".*","is_automated","permissions",{"_82":22,"_83":11,"_84":11},"read","write","admin","user","storage_size",383774464,"orgData",{"_90":91,"_92":93,"_94":95,"_96":33,"_97":98,"_99":100,"_101":102,"_103":104,"_105":106,"_107":108,"_109":102,"_110":111,"_112":22},"id","a36b559bb7994958b87eac94ba5bd09b","uuid","a36b559b-b799-4958-b87e-ac94ba5bd09b","type","organization","orgname","full_name","Dockette","location","CZ","company","","profile_url","https://github.com/dockette","date_joined","2015-12-04T10:51:17.471231Z","gravatar_url","https://www.gravatar.com/avatar/a04a27c6c664c9f1fe7c339e356b7b27?s=80&r=g&d=mm","gravatar_email","badge","open_source","is_active","recentTags",[115,159],{"_116":44,"_117":118,"_119":120,"_121":122,"_90":123,"_124":125,"_50":147,"_148":118,"_149":150,"_151":56,"_57":152,"_153":154,"_155":132,"_156":147,"_157":66,"_158":22},"content_type","creator",234989,"digest","sha256:6fc637312b1a6162497e275918722ec51a00243a14ec8e1be00d8bfda068978e","full_size",50412949,1287424749,"images",[126,141],{"_127":128,"_119":129,"_130":102,"_131":132,"_133":134,"_135":136,"_137":102,"_138":-5,"_139":122,"_63":66,"_140":-5},"architecture","amd64","sha256:53ac1c142b03e051bb0c7946aa17e9811f3dfc1f2386a044c1ca04f883926b58","features","last_pulled","2026-10-30T10:26:24.050004801Z","last_pushed","2026-08-28T16:02:59.995149513Z","os","linux","os_features","os_version","size","variant",{"_127":142,"_119":143,"_130":102,"_131":144,"_133":145,"_135":136,"_137":102,"_138":-5,"_139":146,"_63":66,"_140":-5},"arm64","sha256:0998550e18af565de1fa815f66da05b90a683dd2c2fd0d8f10056227294d9ee1","2026-10-30T10:26:24.041134719Z","2026-08-28T16:03:00.582522797Z",51163353,"2026-08-28T16:03:01.670768Z","last_updater","last_updater_username","f3l1x","media_type","latest","repository",32296911,"tag_last_pulled","tag_last_pushed","tag_status","v2",{"_116":44,"_117":118,"_119":160,"_121":161,"_90":162,"_124":163,"_50":173,"_148":118,"_149":150,"_151":56,"_57":174,"_153":154,"_155":166,"_156":173,"_157":66,"_158":22},"sha256:eb3c3d33615f8c20fa39e0daee509bf6abf1962fff1d267c1b8bef684354b12c",49844185,1287429245,[164,168],{"_127":128,"_119":165,"_130":102,"_131":166,"_133":167,"_135":136,"_137":102,"_138":-5,"_139":161,"_63":66,"_140":-5},"sha256:c8976f0c6a84902388d444a916d3a34ca9ac991f2e192c1de413f27f7ba47fd7","2026-10-31T01:47:54.668077822Z","2026-10-26T15:05:15.311224693Z",{"_127":142,"_119":169,"_130":102,"_131":170,"_133":171,"_135":136,"_137":102,"_138":-5,"_139":172,"_63":66,"_140":-5},"sha256:a3ccde98ef57f0b6d440845d8242a66763e3b8504f8e9e9c1aaab809ec5f40e8","2026-10-31T01:47:54.664491789Z","2026-10-26T15:05:15.74209882Z",50574279,"2026-10-26T15:05:16.910977Z","mcp","sbxKitMetadata","isPotentialSpam","isHubSbxKitsEnabled","showSbxRunInCloud","showSbxLogoOverride","sbxTrademarkText","displaySecurityMetadata","tagAttestations","tagsHaveAttestations",[],"selectedTag","attestationsUrl","routes/_layout.r.$namespace.$reponame.tags",{"_38":189,"_196":197,"_183":212,"_213":11},{"_40":190,"_42":191,"_45":46,"_47":48,"_49":11,"_50":51,"_52":53,"_54":192,"_57":35,"_32":33,"_58":59,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":-5,"_68":62,"_69":70,"_71":11,"_72":33,"_73":193,"_79":11,"_80":195,"_85":33,"_86":87},[],[44],[56],{"_75":11,"_76":194},[78],{"_82":22,"_83":11,"_84":11},"tags",{"_198":199,"_200":-5,"_201":-5,"_202":203},"count",2,"next","previous","results",[204,208],{"_116":44,"_117":118,"_119":160,"_121":161,"_90":162,"_124":205,"_50":173,"_148":118,"_149":150,"_151":56,"_57":174,"_153":154,"_155":166,"_156":173,"_157":66,"_158":22},[206,207],{"_127":128,"_119":165,"_130":102,"_131":166,"_133":167,"_135":136,"_137":102,"_138":-5,"_139":161,"_63":66,"_140":-5},{"_127":142,"_119":169,"_130":102,"_131":170,"_133":171,"_135":136,"_137":102,"_138":-5,"_139":172,"_63":66,"_140":-5},{"_116":44,"_117":118,"_119":120,"_121":122,"_90":123,"_124":209,"_50":147,"_148":118,"_149":150,"_151":56,"_57":152,"_153":154,"_155":132,"_156":147,"_157":66,"_158":22},[210,211],{"_127":128,"_119":129,"_130":102,"_131":132,"_133":134,"_135":136,"_137":102,"_138":-5,"_139":122,"_63":66,"_140":-5},{"_127":142,"_119":143,"_130":102,"_131":144,"_133":145,"_135":136,"_137":102,"_138":-5,"_139":146,"_63":66,"_140":-5},[],"canDeleteTags","actionData","errors"]

Digest	OS/ARCH	Compressed size
c8976f0c6a84	linux/amd64	47.54 MB
a3ccde98ef57	linux/arm64	48.23 MB

Digest	OS/ARCH	Compressed size
53ac1c142b03	linux/amd64	48.08 MB
0998550e18af	linux/arm64	48.79 MB

dockette/dummy

Tags for dockette/dummy