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dockerelasticsearch-marvel

Referencing files inside build (Docker)

I use boot2docker and want to build a simple docker image with the Dockerfile:

# Pull base image.
FROM elasticsearch

# Install Marvel plugin

RUN \
    && export ES_HOME=/usr/share/elasticsearch  \
    && cd $ES_HOME  \
    && bin/plugin  -u  file:///c/Users/buliov1/dev/elastic/plugins/marvel-latest.zip -i elasticsearch/marvel/latest

The path /c/Users/buliov1/dev/elastic/plugins/marvel-latest.zip is present and accessible on the machine where I build the dockerfile . The problem is that inside the build i get Failed: FileNotFoundException[/c/Users/buliov1/dev/elastic/plugins/marvel-latest.zip (No such file or directory)].

I searched through the documentation and the only solution I see is to use ADD/COPY and copy first the file inside the image and then run the command that uses the file. I don't know how exactly docker build works but , is there a way to build it without copying the file first?

Solution

  • A docker build process is running inside Docker containers and has no access to the host filesystem. The only way to get files into the build environment is through the use of the ADD or COPY mechanism (or by fetching them over the network using, e.g., curl or wget or something).