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Fix persistent folder check within containers

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The previous persistent folder check worked by checking if a file
exists. If you used a bind-mount, then this file is not there. But when
using a docker/podman volume those files are copied, and caused the
container to not start.

This change checks the `/proc/self/mountinfo` for a specific patern to
see if the data folder is persistent or not.

Fixes #2622
This commit is contained in:
BlackDex 2022-07-19 18:39:42 +02:00
parent f1a67663d1
commit 9a787dd105
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18 changed files with 43 additions and 158 deletions
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9
docker/Dockerfile.j2
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@ -181,14 +181,6 @@ RUN touch src/main.rs
# hadolint ignore=DL3059
RUN {{ mount_rust_cache -}} cargo build --features ${DB} --release{{ package_arch_target_param }}
# Create a special empty file which we check within the application.
# If this file exists, then we exit Vaultwarden to prevent data loss when someone forgets to use volumes.
# If you really really want to use volatile storage you can set the env `I_REALLY_WANT_VOLATILE_STORAGE=true`
# This file should disappear if a volume is mounted on-top of this using a docker volume.
# We run this in the build image and copy it over, because the runtime image could be missing some executables.
# hadolint ignore=DL3059
RUN touch /vaultwarden_docker_persistent_volume_check
######################## RUNTIME IMAGE ########################
# Create a new stage with a minimal image
# because we already have a binary built
@ -250,7 +242,6 @@ EXPOSE 3012
# and the binary from the "build" stage to the current stage
WORKDIR /
COPY --from=vault /web-vault ./web-vault
COPY --from=build /vaultwarden_docker_persistent_volume_check /data/vaultwarden_docker_persistent_volume_check
{% if package_arch_target is defined %}
COPY --from=build /app/target/{{ package_arch_target }}/release/vaultwarden .
{% else %}