Rootless podman: support passing arbitrary paths to configuration files #6053
Description
/kind feature
Description
I'd like to be able to specify all configuration files to podman (rootless or not) via configuration flags or podman-specific environment variables.
On Podman 1.9.1 and 1.8.2, when I run podman import result/tarball/nixos-system-x86_64-linux.tar.xz my-image, I get:
Error: open /etc/containers/policy.json: no such file or directory
I found #1336 (rootless: allow to override policy.json by the user) but creating a file at ~/.config/containers/policy.json doesn't seem to change the error. Additionally, since this is part of some automation, I do not want the runners to need to add configuration to their ~ either, and overriding HOME during the test phase is a bit ugly.
Additional information you deem important (e.g. issue happens only occasionally):
Output of podman version:
both:
Version: 1.8.2
RemoteAPI Version: 1
Go Version: go1.14.1
Built: Wed Dec 31 19:00:01 1969
OS/Arch: linux/amd64
debug:
compiler: gc
git commit: ""
go version: go1.14.1
podman version: 1.8.2
host:
BuildahVersion: 1.14.3
CgroupVersion: v1
Conmon:
package: Unknown
path: /nix/store/3dndp024ipa71x2iq9nphq0r4xic7irk-conmon-2.0.15/bin/conmon
version: 'conmon version 2.0.15, commit: unknown'
Distribution:
distribution: nixos
version: 20.03.1422.1e90c46c2d9
IDMappings:
gidmap:
- container_id: 0
host_id: 100
size: 1
uidmap:
- container_id: 0
host_id: 1000
size: 1
MemFree: 2304905216
MemTotal: 16424857600
OCIRuntime:
name: runc
package: Unknown
path: /nix/store/a0ghvlp1416x90k3a65f9p78zbkqpc5x-runc-1.0.0-rc10-bin/bin/runc
version: |-
runc version 1.0.0-rc10
spec: 1.0.1-dev
SwapFree: 17149521920
SwapTotal: 17177767936
arch: amd64
cpus: 8
eventlogger: journald
hostname: Petunia
kernel: 5.5.17
os: linux
rootless: true
slirp4netns:
Executable: /nix/store/qch3lh6r65qwd3jziczbkl2ma13673kh-slirp4netns-1.0.1/bin/slirp4netns
Package: Unknown
Version: |-
slirp4netns version 1.0.1
commit: 6a7b16babc95b6a3056b33fb45b74a6f62262dd4
libslirp: 4.3.0
uptime: 19h 52m 35.67s (Approximately 0.79 days)
registries: {}
store:
ConfigFile: /home/grahamc/.config/containers/storage.conf
ContainerStore:
number: 0
GraphDriverName: vfs
GraphOptions: {}
GraphRoot: /home/grahamc/.local/share/containers/storage
GraphStatus: {}
ImageStore:
number: 0
RunRoot: /run/user/1000/containers
VolumePath: /home/grahamc/.local/share/containers/storage/volumes
and
Version: 1.9.1
RemoteAPI Version: 1
Go Version: go1.14.1
Built: Wed Dec 31 19:00:01 1969
OS/Arch: linux/amd64
debug:
compiler: gc
gitCommit: ""
goVersion: go1.14.1
podmanVersion: 1.9.1
host:
arch: amd64
buildahVersion: 1.14.8
cgroupVersion: v1
conmon:
package: Unknown
path: /nix/store/3dndp024ipa71x2iq9nphq0r4xic7irk-conmon-2.0.15/bin/conmon
version: 'conmon version 2.0.15, commit: unknown'
cpus: 8
distribution:
distribution: nixos
version: 20.03.1422.1e90c46c2d9
eventLogger: file
hostname: Petunia
idMappings:
gidmap:
- container_id: 0
host_id: 100
size: 1
uidmap:
- container_id: 0
host_id: 1000
size: 1
kernel: 5.5.17
memFree: 2319196160
memTotal: 16424857600
ociRuntime:
name: runc
package: Unknown
path: /nix/store/a0ghvlp1416x90k3a65f9p78zbkqpc5x-runc-1.0.0-rc10-bin/bin/runc
version: |-
runc version 1.0.0-rc10
spec: 1.0.1-dev
os: linux
rootless: true
slirp4netns:
executable: /nix/store/qch3lh6r65qwd3jziczbkl2ma13673kh-slirp4netns-1.0.1/bin/slirp4netns
package: Unknown
version: |-
slirp4netns version 1.0.1
commit: 6a7b16babc95b6a3056b33fb45b74a6f62262dd4
libslirp: 4.3.0
swapFree: 17149521920
swapTotal: 17177767936
uptime: 19h 51m 42.91s (Approximately 0.79 days)
registries: {}
store:
configFile: /home/grahamc/.config/containers/storage.conf
containerStore:
number: 0
paused: 0
running: 0
stopped: 0
graphDriverName: vfs
graphOptions: {}
graphRoot: /home/grahamc/.local/share/containers/storage
graphStatus: {}
imageStore:
number: 0
runRoot: /run/user/1000/containers
volumePath: /home/grahamc/.local/share/containers/storage/volumes
Additional environment details (AWS, VirtualBox, physical, etc.):
I'd like to be able to do this universally.