[BUG] Dockerfile.dockeringore is ignored if Dockerfile is a link #13014
Description
Description
Using multiple dockerfiles with a twist - symbolic links instead of more files - stopped working recently
Steps To Reproduce
create a Dockerfile with the following content:
FROM alpine
RUN --mount=target=/mnt/ ls -lA /mnt/
create a compose.yaml with the following content:
services:
service:
build:
dockerfile: link
create the link symlink ln -s Dockerfile link and a link.dockeringore with the following content:
*
Then run docker compose --progress=plain build --no-cache and observe the output:
#7 [stage-0 2/2] RUN --mount=target=/mnt/ ls -lA /mnt/
#7 0.137 total 16
#7 0.137 -rw-r--r-- 1 root root 50 Jul 3 14:36 Dockerfile
#7 0.137 -rw-r--r-- 1 root root 56 Jul 3 14:43 compose.yaml
#7 0.137 lrwxrwxrwx 1 root root 10 Jul 3 14:50 link -> Dockerfile
#7 0.137 -rw-r--r-- 1 root root 2 Jul 3 14:59 link.dockerignore
#7 DONE 0.2s
Compare this with docker bake --progress=plain --no-cache or docker buildx build --progress=plain --no-cache -f link .:
#5 [stage-0 2/2] RUN --mount=target=/mnt/ ls -lA /mnt/
#5 0.138 total 0
#5 DONE 0.2s
Compose Version
Docker Compose version v2.38.1
Docker Environment
Anything else?
No response