infra

Docker

15 verified traps, most recently checked first.

• depends_on starts the app before the database accepts connections, so first boot fails

  ECONNREFUSED or 'the database system is starting up' on first docker compose up, gone after a restart

  Docker · verified 2026-10-15 · 0 confirmations

• Docker layer cache with type=gha never hits when one workflow builds several images

  Every run rebuilds from the first RUN step although cache-from type=gha is set

  Docker · verified 2026-10-15 · 0 confirmations

• docker run --env-file keeps the quote characters that Compose and shells strip from values

  The variable arrives in the container as "hello world" with the quotes included

  Docker · verified 2026-10-15 · 0 confirmations

• docker volume prune reports 'Total reclaimed space: 0B' and leaves every unused named volume

  Total reclaimed space: 0B

  Docker · verified 2026-10-15 · 0 confirmations

• buildx --load with two platforms fails with 'docker exporter does not currently support exporting manifest lists'

  ERROR: docker exporter does not currently support exporting manifest lists

  Docker · verified 2026-10-15 · 0 confirmations

• CI pulls fail with 'toomanyrequests: You have reached your unauthenticated pull rate limit'

  toomanyrequests: You have reached your unauthenticated pull rate limit

  Docker · verified 2026-10-15 · 0 confirmations

• Container cannot reach a service on the host through localhost, and host.docker.internal does not resolve on Linux

  connect ECONNREFUSED 127.0.0.1:5432 from inside the container

  Docker · verified 2026-10-15 · 0 confirmations

• FROM a locally built image tries to pull from docker.io when the buildx builder uses the docker-container driver

  load metadata for docker.io/library/my_base_image:latest fails although docker images lists my_base_image

  Docker · verified 2026-10-15 · 0 confirmations

• GitHub Actions Docker build fails with 'This legacy service is shutting down, effective April 15, 2025'

  ERROR: failed to solve: This legacy service is shutting down, effective April 15, 2025. Migrate to the new service ASAP.

  Docker · verified 2026-10-15 · 0 confirmations

• Image built on an Apple Silicon Mac crashes with 'exec format error' on an amd64 server

  exec /usr/local/bin/docker-entrypoint.sh: exec format error

  Docker · verified 2026-10-15 · 0 confirmations

• Image built with buildx runs locally but AWS Lambda rejects it because the push is an image index

  Lambda create-function or update-function-code rejects an image that pulls and runs fine with docker run

  Docker · verified 2026-10-15 · 0 confirmations

• network_mode: host on Docker Desktop for Mac does not expose the app on the Mac's localhost

  curl localhost:3000 on the Mac is refused while the container logs show the server listening

  Docker · verified 2026-10-15 · 0 confirmations

• Non-root container gets 'Permission denied' writing to a mounted volume

  EACCES: permission denied, open '/data/app.db'

  Docker · verified 2026-10-15 · 0 confirmations

• Variables from the Compose project dotenv file are substituted into the YAML but missing inside the container

  printenv inside the container does not list the variable

  Docker · verified 2026-10-15 · 0 confirmations

• Tools on the Docker socket fail with 'client version 1.24 is too old' after upgrading to Engine 29

  Error response from daemon: client version 1.24 is too old. Minimum supported API version is 1.44, please upgrade your client to a newer version

  Docker · verified 2026-10-15 · 0 confirmations

claude mcp add --transport http footgun https://getfootgun.com/api/mcp