Inside the dockerfile, I want to specify a copy operation for files which are defined by globbing and I want it to be copied with the path as well. So, something like this:
COPY ./src/**/project.json /app/**/
Considering I have the following structure:
./src/bar/project.json
./src/foo/project.json
The destination should look like this:
/app/bar/project.json
/app/foo/project.json
but apparently, this doesn't work and I really don't want to specify all of the COPY operations separately if I have a chance. Any idea how to do this?
Note that I cannot basically ignore other files through
.dockerignoreas suggested as I am going to copy the other files from the same folder after ruining a package install operation. So, the dockerfile is similar to this:FROM microsoft/aspnet:1.0.0-rc1-update1 COPY ./src/**/project.json /app/**/ WORKDIR /app/ModernShopping.Auth RUN ["dnu", "restore"] ADD ./src /app EXPOSE 44300 ENTRYPOINT ["dnx", "web"]
For any non-standard build operation, I prefer wrapping the docker build command in a script (named 'build').
Here I would
tmp (just beside the Dockerfile, in order to keep it in the docker build context)cp with globing: cp ./src/**/project.json tmpdocker build, with a Dockerfile including COPY tmp/ /app/tmp.That way, I pre-configure what I need from host, before building the image from the host context.
Workaround
Dockerfile:
COPY src/ /app/
.dockerignore:
**
!**/project.json
Little late, but with multistage building, you can get this behavior. Here I do it for a large maven build
FROM maven:3.6-slim as staging
WORKDIR /src/
COPY . .
RUN mkdir /poms/ \
&& find ./ -type d -exec mkdir -p '/poms/{}' \; \
&& find ./ -name pom.xml -exec cp -r '{}' '/poms/{}' \;
FROM maven:3.6-slim as builder
WORKDIR /src/
COPY --from=staging /poms/* ./
RUN mvn dependency:go-offline
A bit of a hack, but given that it's a multistage, the first stage just get's thrown away and the copy is a cheap operation