Dropbox unable to start on Linux container

[flatboy2016]

Host is CentOS 7; all host filesystems are ext4.

I'm trying to create a container using otherguy/dropbox.

Container is successful at downloading current version of Dropbox client and requesting that computer is linked to Dropbox account.

When it attempts to start Dropbox, I get the following error message:

Couldn't start Dropbox.
2This is usually because of a permissions error. Storing your home folder on a network share can also cause an error.
3Get more help at https://www.dropbox.com/c/help/permissions_error
4Please contact Dropbox support with the following info for help:
5/var/tmp/dropbox_errorgcdzlv0_.txt

Output of text file:

bn.BUILD_KEY: Dropbox
2bn.VERSION: 127.4.4265
3bn.constants.WINDOWS_SHELL_EXT_VERSION: 48
4bn.is_frozen: True
5machine_id: 88ca5e7b-2819-c56f-fc2a-b2fc4af49881
6pid: 48
7ppid: 1
8ppid exe: failed
9uid: 501
10user_info: pwd.struct_passwd(pw_name='dropbox', pw_passwd='x', pw_uid=501, pw_gid=1011, pw_gecos='Dropbox Daemon Account', pw_dir='/opt/dropbox', pw_shell='/usr/sbin/nologin')
11effective_user_info: pwd.struct_passwd(pw_name='dropbox', pw_passwd='x', pw_uid=501, pw_gid=1011, pw_gecos='Dropbox Daemon Account', pw_dir='/opt/dropbox', pw_shell='/usr/sbin/nologin')
12euid: 501
13gid: 1011
14egid: 1011
15group_info: grp.struct_group(gr_name='dropbox', gr_passwd='x', gr_gid=1011, gr_mem=[])
16effective_group_info: grp.struct_group(gr_name='dropbox', gr_passwd='x', gr_gid=1011, gr_mem=[])
17LD_LIBRARY_PATH: None
18cwd: '/opt/dropbox/Dropbox'
19     real_path='/opt/dropbox/Dropbox'
20                mode=0o40755    uid=501 gid=1011
21     parent     mode=0o40755    uid=501 gid=1011
22HOME: '/opt/dropbox'
23appdata: '/opt/dropbox/.dropbox/instance1'
24         real_path='/opt/dropbox/.dropbox/instance1'
25                mode=0o40700    uid=501 gid=1011
26         parent mode=0o40755    uid=501 gid=1011
27dropbox_path: '/opt/dropbox/Dropbox (GPI)'
28              real_path='/opt/dropbox/Dropbox (GPI)'
29                        mode=0o40700    uid=501 gid=1011
30              parent    mode=0o40755    uid=501 gid=1011
31sys_executable: '/opt/dropbox/bin/dropbox-lnx.x86_64-127.4.4265/dropbox'
32                real_path='/opt/dropbox/bin/dropbox-lnx.x86_64-127.4.4265/dropbox'
33                        mode=0o100755   uid=501 gid=1011
34                parent  mode=0o40755    uid=501 gid=1011
35trace.__file__: '/opt/dropbox/bin/dropbox-lnx.x86_64-127.4.4265/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'
36                real_path='/opt/dropbox/bin/dropbox-lnx.x86_64-127.4.4265/python-packages.zip/dropbox/client/ui/common/boot_error.pyc'
37                        not found
38                parent  not found
39tempdir: '/var/tmp'
40         real_path='/var/tmp'
41                mode=0o41777    uid=0   gid=0
42         parent mode=0o40755    uid=0   gid=0
43Traceback (most recent call last):
44  File "dropbox/client/main.pyc", line 827, in wrapper
45  File "dropbox/client/main.pyc", line 6650, in finish_dropbox_boot
46  File "dropbox/client/message_queue.pyc", line 307, in _wrapped
47  File "dropbox/client/main.pyc", line 6147, in _init_components_for_account
48  File "dropbox/client/main.pyc", line 6073, in create_sync_engine
49  File "dropbox/sync_engine_boundary/factory.pyc", line 225, in make_sync_engine
50  File "dropbox/sync_engine/nucleus/classic_client/sync_engine.pyc", line 278, in __init__
51  File "dropbox/sync_engine/nucleus/classic_client/modern_client/modern_client.pyc", line 219, in __init__
52  File "dropbox/sync_engine/nucleus/classic_client/modern_client/base.pyc", line 150, in __init__
53  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 223, in __init__
54  File "dropbox/sync_engine/nucleus/classic_client/thin_adapter/in_proc.pyc", line 591, in _init_new_engine_locked
55  File "dropbox/sync_engine/nucleus/thin_client/client.pyc", line 182, in __init__
56  File "desktop/extensions/nucleus/nucleus_python.pyx", line 76, in nucleus_python.NucleusSyncEngine.__cinit__
57nucleus_python.SyncEngineError: "Initializing engine |>> Initializing platform |>> Checking if filesystem is supported |>> Filesystem \"Unknown(2035054128)\" not supported! See dropbox.com/help/3 "

I have no idea what next steps are supposed to be.  Help!

[Hunter]

Hey @flatboy2016, thank you for posting on our Community!

Have you tried installing the Dropbox Desktop application, following these steps, instead of the source you mentioned?

Let us know how it goes.

[flatboy2016 · Accepted solution]

Solution found.  I had to make sure my Dropbox folder was owned by the dropbox user and showing the correct UID and GID.

[otherguy]

Hey @flatboy2016! Thanks for using my container 🙂 If you run into any issues, feel free to open a ticket at https://github.com/otherguy/docker-dropbox