Production Fixes
Real issues from real deployments. Each fix is tagged by tool so you can find what you need fast.
Container exits immediately after start
Container starts but exits within seconds. docker ps shows nothing.
Read fix →permission denied: /var/run/docker.sock
Running docker commands fails with permission denied on the socket.
Read fix →Docker build using stale cache after code change
Image rebuilds skip your code changes and serve old content.
Read fix →Container cannot reach host or other containers
App inside container fails to connect to localhost or sibling containers.
Read fix →Docker image is several GB — much larger than expected
Built image is 2-3x bigger than it needs to be.
Read fix →Environment variable not available inside container
App inside container cannot read env variables you set on the host.
Read fix →Data lost when container restarts
Uploads or database data disappear every time the container is recreated.
Read fix →Port is already in use when starting container
docker run fails because the host port is already bound.
Read fix →docker push fails with authentication required in CI
Pipeline cannot push image to registry — auth error.
Read fix →