Cannot build Dockerfile in /tmp/ on macos

[bbannier]

/kind bug

Description

Building a Dockerfile residing in /tmp/ does not seem to work on macos.

Steps to reproduce the issue:

1. Running podman-3.3.1 on macos-10.15.7

2. Create a Dockerfile in /tmp/

   $ realpath /tmp
   /private/tmp
   $ cat /tmp/Dockerfile
   FROM docker.io/debian:bullseye-slim
   

3. Attempting to build the container fails with what looks like a sync issue to the podman VM.

   $ podman build -f Dockerfile
   Error: stat /var/tmp/libpod_builder583257481/build/Dockerfile: no such file or directory
   

Describe the results you expected:

I would have expected that either building in /tmp/ works like building in any other directory, or that the build would have failed with a more helpful diagnostic message.

Output of podman version:

Client:
Version:      3.3.1
API Version:  3.3.1
Go Version:   go1.17
Built:        Mon Aug 30 21:15:26 2021
OS/Arch:      darwin/amd64

Server:
Version:      3.3.1
API Version:  3.3.1
Go Version:   go1.16.6
Built:        Mon Aug 30 22:46:36 2021
OS/Arch:      linux/amd64```

Output of podman info --debug:

host:
  arch: amd64
  buildahVersion: 1.22.3
  cgroupControllers: []
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: conmon-2.0.29-2.fc34.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.0.29, commit: '
  cpus: 8
  distribution:
    distribution: fedora
    version: "34"
  eventLogger: journald
  hostname: localhost
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  kernel: 5.13.16-200.fc34.x86_64
  linkmode: dynamic
  memFree: 20104089600
  memTotal: 25198313472
  ociRuntime:
    name: crun
    package: crun-1.0-1.fc34.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 1.0
      commit: 139dc6971e2f1d931af520188763e984d6cdfbf8
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +YAJL
  os: linux
  remoteSocket:
    exists: true
    path: /run/user/1000/podman/podman.sock
  security:
    apparmorEnabled: false
    capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
    rootless: true
    seccompEnabled: true
    seccompProfilePath: /usr/share/containers/seccomp.json
    selinuxEnabled: true
  serviceIsRemote: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.1.12-2.fc34.x86_64
    version: |-
      slirp4netns version 1.1.12
      commit: 7a104a101aa3278a2152351a082a6df71f57c9a3
      libslirp: 4.4.0
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.0
  swapFree: 0
  swapTotal: 0
  uptime: 2h 29m 41.05s (Approximately 0.08 days)
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - docker.io
  - quay.io
store:
  configFile: /var/home/core/.config/containers/storage.conf
  containerStore:
    number: 0
    paused: 0
    running: 0
    stopped: 0
  graphDriverName: overlay
  graphOptions: {}
  graphRoot: /var/home/core/.local/share/containers/storage
  graphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "true"
    Supports d_type: "true"
    Using metacopy: "false"
  imageStore:
    number: 28
  runRoot: /run/user/1000/containers
  volumePath: /var/home/core/.local/share/containers/storage/volumes
version:
  APIVersion: 3.3.1
  Built: 1630356396
  BuiltTime: Mon Aug 30 20:46:36 2021
  GitCommit: ""
  GoVersion: go1.16.6
  OsArch: linux/amd64
  Version: 3.3.1

Package info (e.g. output of rpm -q podman or apt list podman):

$ brew info podman
podman: stable 3.3.1 (bottled), HEAD
Tool for managing OCI containers and pods
https://podman.io/
/usr/local/Cellar/podman/3.3.1 (170 files, 39MB) *
  Poured from bottle on 2021-09-24 at 10:28:12
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/podman.rb
License: Apache-2.0
==> Dependencies
Build: go ✔, go-md2man ✘
Required: qemu ✔
==> Options
--HEAD
        Install HEAD version
==> Caveats
zsh completions have been installed to:
  /usr/local/share/zsh/site-functions
==> Analytics
install: 11,678 (30 days), 18,109 (90 days), 44,105 (365 days)
install-on-request: 11,678 (30 days), 18,103 (90 days), 43,657 (365 days)
build-error: 0 (30 days)

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide? (https://github.com/containers/podman/blob/master/troubleshooting.md)

Yes/No (Homebrew formula seems outdated against --HEAD)

...
==> make install-podman-remote-darwin-docs
Last 15 lines from /Users/bbannier/Library/Logs/Homebrew/podman/03.make:
2021-09-24 10:27:51 +0200

make
install-podman-remote-darwin-docs

make: *** No rule to make target `install-podman-remote-darwin-docs'.  Stop.

[vrothberg]

Thanks for reaching out, @bbannier.

@ashley-cui @baude PTAL

[Luap99]

Does it work if you run podman build . in the directory?

[bbannier]

Does it work if you run podman build . in the directory?

No, similar error (different random directory though),

$ podman build .
Error: stat /var/tmp/libpod_builder145554633/build/Dockerfile: no such file or directory

[Luap99]

I can reproduce with podman-remote, it looks like symlinks are not handled correctly.

[vrothberg]

@Luap99 can you share your reproducer?

[Luap99]

$ mkdir target
$ ln -s target/ link
$ cat > target/Dockerfile <<EOF
FROM alpine
RUN echo hello
EOF
$ podman-remote build link/
Error: stat /var/tmp/libpod_builder867821600/build/Dockerfile: no such file or directory

$ podman-remote build target/
STEP 1/2: FROM alpine
STEP 2/2: RUN echo hello
--> Using cache 5a1a4ec3e73347c6583b6fd3e1a8fd633fc3df81b496ce234142a6ba959ff4c3
--> 5a1a4ec3e73
5a1a4ec3e73347c6583b6fd3e1a8fd633fc3df81b496ce234142a6ba959ff4c3

$ podman-remote build -f link/Dockerfile 
Error: stat /var/tmp/libpod_builder324688225/build/Dockerfile: no such file or directory

$ podman-remote build -f target/Dockerfile 
STEP 1/2: FROM alpine
STEP 2/2: RUN echo hello
--> Using cache 5a1a4ec3e73347c6583b6fd3e1a8fd633fc3df81b496ce234142a6ba959ff4c3
--> 5a1a4ec3e73
5a1a4ec3e73347c6583b6fd3e1a8fd633fc3df81b496ce234142a6ba959ff4c3

[vrothberg]

@nalind @rhatdan PTAL

[nalind]

@Luap99 thanks for the reproducer, opened #11755 for it.