.dockerignore with '*' wildcard doesn't work as documented #585
Description
- This is a bug report
- This is a feature request
- I searched existing issues before opening this one
Expected behavior
According to the documentation at https://docs.docker.com/engine/reference/builder/#dockerignore-file:
Finally, you may want to specify which files to include in the context, rather than which to exclude. To achieve this, specify * as the first pattern, followed by one or more ! exception patterns.
Using this .dockerignore file:
*
!docker/*/Dockerfile
I would expect that all files are excluded by default except the named Dockerfile.
Actual behavior
Using the above .dockerignore file, docker build complains that it cannot locate the named Dockerfile:
$ docker build . -f docker/application/Dockerfile
Sending build context to Docker daemon 2.048kB
Error response from daemon: Cannot locate specified Dockerfile: docker/application/Dockerfile
Steps to reproduce the behavior
mkdir -p docker/application
echo "FROM tomcat:7.0.92-jre8" > docker/application/Dockerfile
echo "*" > ./.dockerignore
echo "!docker/*/Dockerfile" >> ./.dockerignore
docker build . -f docker/application/Dockerfile
Output of docker version:
Client:
Version: 18.09.1
API version: 1.39
Go version: go1.10.6
Git commit: 4c52b90
Built: Wed Jan 9 19:35:59 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 18.09.1
API version: 1.39 (minimum version 1.12)
Go version: go1.10.6
Git commit: 4c52b90
Built: Wed Jan 9 19:02:44 2019
OS/Arch: linux/amd64
Experimental: false
Output of docker info:
Containers: 26
Running: 1
Paused: 0
Stopped: 25
Images: 112
Server Version: 18.09.1
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 96ec2177ae841256168fcf76954f7177af9446eb
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 4.9.0-8-amd64
Operating System: Debian GNU/Linux 9 (stretch)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 7.685GiB
Name: kentang
ID: 4SNI:INVE:W35N:4NNV:55J2:2J42:6ZLC:MZBU:US3R:V375:BCT7:TCNT
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
WARNING: No swap limit support
Additional environment details (AWS, VirtualBox, physical, etc.)
Physical (Debian Stretch amd64)