Dockerfile fixes

- ref: https://forum.rclone.org/t/run-docker-container-in-userspace/11734/7
- enable userspace operation
- enable Docker userspace mount exposed to the host
- add more Docker image usage documentation
This commit is contained in:
Matei David 2019-09-17 01:15:48 -04:00 committed by Nick Craig-Wood
parent 8fe87c8157
commit 070a8bfcd8
2 changed files with 50 additions and 8 deletions

View File

@ -12,10 +12,11 @@ RUN ./rclone version
# Begin final image
FROM alpine:latest
RUN apk --no-cache add ca-certificates
RUN apk --no-cache add ca-certificates fuse
WORKDIR /root/
COPY --from=builder /go/src/github.com/rclone/rclone/rclone /usr/local/bin/
COPY --from=builder /go/src/github.com/rclone/rclone/rclone .
ENTRYPOINT [ "rclone" ]
ENTRYPOINT [ "./rclone" ]
WORKDIR /data
ENV XDG_CONFIG_HOME=/config

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@ -102,13 +102,54 @@ rclone v1.49.1
- go version: go1.12.9
```
You will probably want to mount rclone's config file directory or file
from the host, or configure rclone with environment variables.
There are a few command line options to consider when starting an rclone Docker container
from the rclone image.
Eg to share your local config with the container
- You need to mount the host rclone config dir at `/config` into the Docker container.
Due to the way in which rclone updates tokens inside its config file, you need to
mount a host config dir, not just a host config file.
- You need to mount a host data dir at `/data` into the Docker container.
- By default, the rclone binary inside a Docker container runs with UID=0 (root).
As a result, all files created in a run will have UID=0. If your config and data files
reside on the host with a non-root UID:GID, you need to pass these on the container
start command line.
- It is possible to use `rclone mount` inside a userspace Docker container, and expose
the resulting fuse mount to the host. The exact `docker run` options to do that might
vary slightly between hosts. See, e.g. the discussion in this
[thread](https://github.com/moby/moby/issues/9448).
You also need to mount the host `/etc/passwd` and `/etc/group` for fuse to work inside
the container.
Here are some commands tested on an Ubuntu 18.04.3 host:
```
docker run -v ~/.config/rclone:/root/.config/rclone rclone/rclone:latest listremotes
# config on host at ~/.config/rclone/rclone.conf
# data on host at ~/data
# make sure the config is ok by listing the remotes
docker run --rm \
--volume ~/.config/rclone:/config/rclone \
--volume ~/data:/data:shared \
--user $(id -u):$(id -g) \
rclone/rclone \
listremotes
# perform mount inside Docker container, expose result to host
mkdir -p ~/data/mount
docker run --rm \
--volume ~/.config/rclone:/config/rclone \
--volume ~/data:/data:shared \
--user $(id -u):$(id -g) \
--volume /etc/passwd:/etc/passwd:ro --volume /etc/group:/etc/group:ro \
--device /dev/fuse --cap-add SYS_ADMIN --security-opt apparmor:unconfined \
rclone/rclone \
mount dropbox:Photos /data/mount &
ls ~/data/mount
kill %1
```
## Install from source ##