MCP Servers: Can't start: failed to connect: calling "initialize": EOF

[ahmed-fawzy99]

Description

All of the MCP servers installed via Docker MCP are throwing Can't start {X}: failed to connect: calling "initialize": EOF

Example of the errors:

~ docker mcp gateway run ✔ - Reading configuration... - Reading registry from registry.yaml - Reading catalog from [docker-mcp.yaml] - Reading config from config.yaml - Reading tools from tools.yaml - Reading secrets [obsidian.api_key postman.postman-api-key] - Configuration read in 527.649979ms - Those servers are enabled: fetch, node-code-sandbox, obsidian, playwright, postman - Listing MCP tools... - Running mcp/node-code-sandbox with [run --rm -i --init --security-opt no-new-privileges --cpus 1 --memory 2Gb --pull never -l docker-mcp=true -l docker-mcp-tool-type=mcp -l docker-mcp-name=node-code-sandbox -l docker-mcp-transport=stdio] - Running mcp/obsidian with [run --rm -i --init --security-opt no-new-privileges --cpus 1 --memory 2Gb --pull never -l docker-mcp=true -l docker-mcp-tool-type=mcp -l docker-mcp-name=obsidian -l docker-mcp-transport=stdio -e OBSIDIAN_API_KEY -e OBSIDIAN_HOST] - Running mcp/playwright with [run --rm -i --init --security-opt no-new-privileges --cpus 1 --memory 2Gb --pull never -l docker-mcp=true -l docker-mcp-tool-type=mcp -l docker-mcp-name=playwright -l docker-mcp-transport=stdio] - Running mcp/fetch with [run --rm -i --init --security-opt no-new-privileges --cpus 1 --memory 2Gb --pull never -l docker-mcp=true -l docker-mcp-tool-type=mcp -l docker-mcp-name=fetch -l docker-mcp-transport=stdio] - Running mcp/postman with [run --rm -i --init --security-opt no-new-privileges --cpus 1 --memory 2Gb --pull never -l docker-mcp=true -l docker-mcp-tool-type=mcp -l docker-mcp-name=postman -l docker-mcp-transport=stdio -e POSTMAN_API_KEY] > Can't start playwright: failed to connect: calling "initialize": EOF > Can't start postman: failed to connect: calling "initialize": EOF > Can't start obsidian: failed to connect: calling "initialize": EOF > Can't start fetch: failed to connect: calling "initialize": EOF > Can't start node-code-sandbox: failed to connect: calling "initialize": EOF > 0 tools listed in 1.25688583s - Using images: - mcp/fetch@sha256:ef9535a3f07249142f9ca5a6033d7024950afdb6dc05e98292794a23e9f5dfbe - mcp/node-code-sandbox@sha256:6b7180ab719dab2028dfc689002295ed6d55f7cc6217122d5025d849d5269666 - mcp/obsidian@sha256:0eba4c05742ad35faeb91eca40b792454d440d86449c9f1b3cb6c387a510651b - mcp/playwright@sha256:c0cd8718ba84f248ddda38c8e257afd1b996c56614d8ffe3366548db73ca158d - mcp/postman@sha256:effe3e8e8e138385797a0adf469de855bb8d9bbc74e0b1320b3b3658493ac2f6 > Images pulled in 43.752362ms - Watching for configuration updates... > Initialized in 1.828414326s > Start stdio server

Reproduce

1. Install Docker Desktop On Debian 12
2. Install MCP Servers
3. run docker mcp gateway run to check the logs

Expected behavior

The MCPs should run.

docker version

Client: Docker Engine - Community
 Version:           28.3.3
 API version:       1.51
 Go version:        go1.24.5
 Git commit:        980b856
 Built:             Fri Jul 25 11:34:00 2025
 OS/Arch:           linux/amd64
 Context:           desktop-linux

Server: Docker Desktop 4.46.0 (204649)
 Engine:
  Version:          28.4.0
  API version:      1.51 (minimum version 1.24)
  Go version:       go1.24.7
  Git commit:       249d679
  Built:            Wed Sep  3 20:57:37 2025
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.7.27
  GitCommit:        05044ec0a9a75232cad458027ca83437aae3f4da
 runc:
  Version:          1.2.5
  GitCommit:        v1.2.5-0-g59923ef
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

docker info

Client: Docker Engine - Community
 Version:    28.3.3
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  ai: Docker AI Agent - Ask Gordon (Docker Inc.)
    Version:  v1.9.11
    Path:     /home/ahmed/.docker/cli-plugins/docker-ai
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.28.0-desktop.1
    Path:     /home/ahmed/.docker/cli-plugins/docker-buildx
  cloud: Docker Cloud (Docker Inc.)
    Version:  v0.4.27
    Path:     /home/ahmed/.docker/cli-plugins/docker-cloud
  compose: Docker Compose (Docker Inc.)
    Version:  v2.39.2-desktop.1
    Path:     /home/ahmed/.docker/cli-plugins/docker-compose
  debug: Get a shell into any image or container (Docker Inc.)
    Version:  0.0.42
    Path:     /home/ahmed/.docker/cli-plugins/docker-debug
  desktop: Docker Desktop commands (Docker Inc.)
    Version:  v0.2.0
    Path:     /home/ahmed/.docker/cli-plugins/docker-desktop
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.31
    Path:     /home/ahmed/.docker/cli-plugins/docker-extension
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v1.4.0
    Path:     /home/ahmed/.docker/cli-plugins/docker-init
  mcp: Docker MCP Plugin (Docker Inc.)
    Version:  v0.18.0
    Path:     /home/ahmed/.docker/cli-plugins/docker-mcp
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /home/ahmed/.docker/cli-plugins/docker-sbom
  scout: Docker Scout (Docker Inc.)
    Version:  v1.18.3
    Path:     /home/ahmed/.docker/cli-plugins/docker-scout

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 4
 Server Version: 28.4.0
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Discovered Devices:
  cdi: docker.com/gpu=webgpu
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 05044ec0a9a75232cad458027ca83437aae3f4da
 runc version: v1.2.5-0-g59923ef
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.10.14-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: x86_64
 CPUs: 16
 Total Memory: 7.654GiB
 Name: docker-desktop
 ID: 676bff14-751f-435a-bdf1-bd40826f5dd4
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Labels:
  com.docker.desktop.address=unix:///home/ahmed/.docker/desktop/docker-cli.sock
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5555
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false

Diagnostics ID

_

Additional Info

No response