Package: docker.io
Version: 20.10.5+dfsg1-1+b3
Severity: important

Dear Maintainer,

After installing docker.io on a Debian machine with a 'default'
AppArmor installation, I am unable to run containers. The error message
I get is as follows:

    Error response from daemon: AppArmor enabled on system but the 
docker-default profile could not be loaded: running `apparmor_parser 
apparmor_parser --version` failed with output: 
        error: exec: "apparmor_parser": executable file not found in $PATH

It appears that Docker tries to load an AppArmor profile, but fails to
do so because I do not have the AppArmor userspace utilities installed,
because I am not actually using AppArmor (nor do I intend to). However,
because AppArmor is included/enabled in the kernel shipped by Debian by
default, Docker thinks it needs to load a profile.

I am not sure of the proper way to deal with this issue. Should I
install the AppArmor userspace utilities, even though I do not need them
myself? Or should I disable AppArmor completely by explicity setting a
kernel parameter (which the Debian wiki does not recommend)?

In the former case, docker.io should probably depend on the apparmor
package (it is currently a recommendation), since Docker is not usable
(as far as I understand) without it.

Thanks in advance,

Lars

-- System Information:
Debian Release: 11.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-2-amd64 (SMP w/2 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages docker.io depends on:
ii  adduser              3.118
ii  containerd           1.4.5~ds1-1+b2
ii  init-system-helpers  1.60
ii  iptables             1.8.7-1
ii  libc6                2.31-12
ii  libdevmapper1.02.1   2:1.02.175-2.1
ii  libsystemd0          247.3-5
ii  lsb-base             11.1.0
ii  runc                 1.0.0~rc93+ds1-5+b1
ii  tini                 0.19.0-1

Versions of packages docker.io recommends:
pn  apparmor         <none>
ii  ca-certificates  20210119
pn  cgroupfs-mount   <none>
ii  git              1:2.30.2-1
ii  needrestart      3.5-4
ii  xz-utils         5.2.5-2

Versions of packages docker.io suggests:
pn  aufs-tools                 <none>
ii  btrfs-progs                5.10.1-2
pn  debootstrap                <none>
pn  docker-doc                 <none>
ii  e2fsprogs                  1.46.2-1
pn  rinse                      <none>
pn  rootlesskit                <none>
ii  xfsprogs                   5.10.0-4
pn  zfs-fuse | zfsutils-linux  <none>

-- no debconf information

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