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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",{"_71":11,"_72":73},"enabled","rules",[74],".*","is_automated","permissions",{"_78":17,"_79":11,"_80":11},"read","write","admin","user","storage_size",162176935,"orgData",{"_86":87,"_88":89,"_90":91,"_92":29,"_93":94,"_95":96,"_97":44,"_98":99,"_100":101,"_102":103,"_104":44,"_105":106,"_107":17},"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",[110,154],{"_111":40,"_112":113,"_114":115,"_116":117,"_86":118,"_119":120,"_46":142,"_143":113,"_144":145,"_146":52,"_53":147,"_148":149,"_150":139,"_151":142,"_152":62,"_153":17},"content_type","creator",234989,"digest","sha256:6fc637312b1a6162497e275918722ec51a00243a14ec8e1be00d8bfda068978e","full_size",50412949,1287424749,"images",[121,136],{"_122":123,"_114":124,"_125":44,"_126":127,"_128":129,"_130":131,"_132":44,"_133":-5,"_134":117,"_59":62,"_135":-5},"architecture","amd64","sha256:53ac1c142b03e051bb0c7946aa17e9811f3dfc1f2386a044c1ca04f883926b58","features","last_pulled","2026-09-20T07:43:20.71296932Z","last_pushed","2026-08-28T16:02:59.995149513Z","os","linux","os_features","os_version","size","variant",{"_122":137,"_114":138,"_125":44,"_126":139,"_128":140,"_130":131,"_132":44,"_133":-5,"_134":141,"_59":62,"_135":-5},"arm64","sha256:0998550e18af565de1fa815f66da05b90a683dd2c2fd0d8f10056227294d9ee1","2026-09-20T07:43:20.716396996Z","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",{"_111":40,"_112":113,"_114":155,"_116":156,"_86":157,"_119":158,"_46":168,"_143":113,"_144":145,"_146":52,"_53":169,"_148":149,"_150":165,"_151":168,"_152":62,"_153":17},"sha256:47326d0f28cf95085eeecdfbbf4477340ac0e87d22e0ea1bd2e028254a2a49a6",50412939,1287429245,[159,163],{"_122":123,"_114":160,"_125":44,"_126":161,"_128":162,"_130":131,"_132":44,"_133":-5,"_134":156,"_59":62,"_135":-5},"sha256:8523a8cd4078d1d81d3d5e9e0af38600bdc7876b99513ad7a7a0ed67dd7f3adc","2026-09-20T09:31:30.428339815Z","2026-09-14T14:56:50.656469987Z",{"_122":137,"_114":164,"_125":44,"_126":165,"_128":166,"_130":131,"_132":44,"_133":-5,"_134":167,"_59":62,"_135":-5},"sha256:ac4d129bdce66028b6fc96f8d45b9d1f341ea42997111ed0fb8b682fa461b603","2026-09-20T09:31:30.446321624Z","2026-09-14T14:56:49.861720346Z",51163679,"2026-09-14T14:56:51.777767Z","mcp","sbxKitMetadata","isPotentialSpam","isHubSbxKitsEnabled","displaySecurityMetadata","tagAttestations","tagsHaveAttestations",[],"routes/_layout.r.$namespace.$reponame.tags",{"_34":179,"_186":187,"_175":202,"_203":11},{"_36":180,"_38":181,"_41":42,"_43":44,"_45":11,"_46":47,"_48":49,"_50":182,"_53":31,"_28":29,"_54":55,"_56":-5,"_57":58,"_59":60,"_61":62,"_63":-5,"_64":58,"_65":66,"_67":11,"_68":29,"_69":183,"_75":11,"_76":185,"_81":29,"_82":83},[],[40],[52],{"_71":11,"_72":184},[74],{"_78":17,"_79":11,"_80":11},"tags",{"_188":189,"_190":-5,"_191":-5,"_192":193},"count",2,"next","previous","results",[194,198],{"_111":40,"_112":113,"_114":155,"_116":156,"_86":157,"_119":195,"_46":168,"_143":113,"_144":145,"_146":52,"_53":169,"_148":149,"_150":165,"_151":168,"_152":62,"_153":17},[196,197],{"_122":123,"_114":160,"_125":44,"_126":161,"_128":162,"_130":131,"_132":44,"_133":-5,"_134":156,"_59":62,"_135":-5},{"_122":137,"_114":164,"_125":44,"_126":165,"_128":166,"_130":131,"_132":44,"_133":-5,"_134":167,"_59":62,"_135":-5},{"_111":40,"_112":113,"_114":115,"_116":117,"_86":118,"_119":199,"_46":142,"_143":113,"_144":145,"_146":52,"_53":147,"_148":149,"_150":139,"_151":142,"_152":62,"_153":17},[200,201],{"_122":123,"_114":124,"_125":44,"_126":127,"_128":129,"_130":131,"_132":44,"_133":-5,"_134":117,"_59":62,"_135":-5},{"_122":137,"_114":138,"_125":44,"_126":139,"_128":140,"_130":131,"_132":44,"_133":-5,"_134":141,"_59":62,"_135":-5},[],"canDeleteTags","actionData","errors"]

Digest	OS/ARCH	Compressed size
8523a8cd4078	linux/amd64	48.08 MB
ac4d129bdce6	linux/arm64	48.79 MB

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

dockette/dummy

Tags for dockette/dummy