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Docker Repice for "gcsfuse" (Google Cloud Storage FUSE)

What's gcsfuse ?

from: https://cloud.google.com/storage/docs/gcs-fuse

Cloud Storage FUSE is an open source FUSE adapter that allows you to mount Google Cloud Storage buckets as file systems on Linux or OS X systems.

gcsfuse main repository: https://github.com/GoogleCloudPlatform/gcsfuse

Dockerize it

This is the product of many hours of my trail-and-error.

In the Dockerfile:

FROM debian:latest

RUN apt-get update  
RUN apt-get install -y curl lsb-release

RUN export GCSFUSE_REPO=gcsfuse-`lsb_release -c -s` \  
    && echo "deb http://packages.cloud.google.com/apt $GCSFUSE_REPO main" | tee /etc/apt/sources.list.d/gcsfuse.list \
    && curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

RUN apt-get update  
RUN apt-get install -y gcsfuse

# need to run command with given user_id
RUN apt-get install -y sudo

# set running environments
ENV BUCKET_NAME undefined-bucket-name  

COPY entrypoint.sh /  
ENTRYPOINT ["sh", "/entrypoint.sh"]  

In the entrypoint.sh:

# just in case ...
chown -R ${UID}:${UID} ${DATA_DIR} 

# run with given user
exec sudo -u "#${UID}" gcsfuse --foreground --key-file=${GOOGLE_APPLICATION_CREDENTIALS} ${BUCKET_NAME} ${DATA_DIR}  

You may build it using: docker build -t gcsfuse .

The run command:

BUCKET_NAME=<your_bucket_name> \  
UID=${UID} \  
docker run -it --rm --privileged \  
  -v /etc/passwd:/etc/passwd:ro \
  -v <path_to_credentials>:/credential.json:ro \
  -v <your_mount_path>:/mnt:shared \

Note: :shared is crucial here ... it allows late-mouting in the container be visible to the host filesystem, without it, the host will not see anything as a result that the mounting point is being replaced by the newer one, and thus becoming obsolete.

Note2: the credential.json is the Service Account Key obtained from

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