Issue Description
Podman substitutes TARGETARCH, but fails to correctly resolve dependencies that require it in the following Containerfiles:
- in
FROM:
FROM alpine:3.23.4@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11 AS artifacts-amd64
RUN echo "amd64" > /arch
FROM alpine:3.23.4@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11 AS artifacts-arm64
RUN echo "arm64" > /arch
FROM artifacts-${TARGETARCH} AS artifacts
ARG TARGETARCH
ENV TARGETARCH=${TARGETARCH}
RUN echo "Hello $(cat /arch): ${TARGETARCH}"
- in
COPY --from
FROM alpine:3.23.4@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11 AS artifacts-amd64
RUN echo "amd64" > /arch
FROM alpine:3.23.4@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11 AS artifacts-arm64
RUN echo "arm64" > /arch
FROM scratch AS artifacts
ARG TARGETARCH
COPY --from=artifacts-${TARGETARCH} /arch /archDocker correctly resolves the former, although not the latter because it doesn't support substitution in COPY --from.
Steps to reproduce the issue
Steps to reproduce the issue
- run
podman build . --platform linux/amd64,linux/arm64 in the directory where you created the Containerfile
Describe the results you received
Depending on your host architecture, you'll see either artifacts-amd64 or artifacts-arm64 being built in both the amd64 build as well as the arm64 one instead of each of them building their respective stages.
Then the build fails with the following errors:
- For the
FROM case -- Error: [linux/arm64]: creating build container: short-name "artifacts-arm64" did not resolve to an alias and no containers-registries.conf(5) was found
- For the
COPY --from case -- Error: [linux/arm64]: COPY --from=artifacts-arm64: no stage or image found with that name
Describe the results you expected
Each build should correctly substitute TAREGTARCH so that these references work.
podman info output
host:
arch: amd64
buildahVersion: 1.44.0
cdiSpecDirs:
- /etc/cdi
- /var/run/cdi
cgroupControllers:
- cpu
- memory
- pids
cgroupManager: systemd
cgroupVersion: v2
conmon:
package: conmon-1:2.2.1-1
path: /usr/bin/conmon
version: 'conmon version 2.2.1, commit: c8cc2c4db27531bd4e084ce7857f73cd21ee639d'
cpuUtilization:
idlePercent: 96.83
systemPercent: 0.66
userPercent: 2.51
cpus: 22
databaseBackend: sqlite
distribution:
distribution: arch
version: unknown
emulatedArchitectures:
- linux/arm
- linux/arm64
- linux/arm64be
- linux/loong64
- linux/mips
- linux/mips64
- linux/ppc
- linux/ppc64
- linux/ppc64le
- linux/riscv32
- linux/riscv64
- linux/s390x
eventLogger: journald
freeLocks: 2002
hostname: isaac-pc
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: 7.1.2-arch3-1
linkmode: dynamic
logDriver: journald
memFree: 766627840
memTotal: 33115537408
networkBackend: netavark
networkBackendInfo:
backend: netavark
defaultNetwork: podman
dns:
package: aardvark-dns-2.0.0-1
path: /usr/lib/podman/aardvark-dns
version: aardvark-dns 2.0.0
package: netavark-2.0.0-1
path: /usr/lib/podman/netavark
version: netavark 2.0.0
ociRuntime:
name: crun
package: crun-1.28-1
path: /usr/bin/crun
version: |-
crun version 1.28-dirty
commit: 54f16ffbefcd022bf032af768b5c5ce075c18bfc
rundir: /run/user/1000/crun
spec: 1.0.0
+SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +LIBKRUN +JSON_C
os: linux
pasta:
executable: /usr/bin/pasta
package: passt-2026_06_11.a9c61ff-1
version: |
pasta 2026_06_11.a9c61ff
Copyright Red Hat
GNU General Public License, version 2 or later
<https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
remoteSocket:
exists: true
path: /run/user/1000/podman/podman.sock
rootlessNetworkCmd: pasta
rootlessPortForwarder: rootlessport
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: false
serviceIsRemote: false
swapFree: 196608
swapTotal: 4294963200
uptime: 196h 27m 56.00s (Approximately 8.17 days)
variant: ""
plugins:
authorization: null
log:
- k8s-file
- none
- passthrough
- journald
network:
- bridge
- macvlan
- ipvlan
volume:
- local
registries: {}
store:
containerStore:
number: 19
paused: 0
running: 0
stopped: 19
graphDriverName: overlay
graphOptions:
overlay.mountopt: nodev
graphRoot: /home/isaac/.local/share/containers/storage
graphStatus:
Native Overlay Diff: "true"
Supports d_type: "true"
Supports shifting: "false"
Supports volatile: "true"
Using metacopy: "false"
imageCopyTmpDir: /var/tmp
imageStore:
number: 575
runRoot: /run/user/1000/containers
transientStore: false
volumePath: /home/isaac/.local/share/containers/storage/volumes
version:
APIVersion: 6.0.0
Built: 1782770596
BuiltTime: Tue Jun 30 01:03:16 2026
GitCommit: a8ed4b6dd12992decf659cadfdfb3d0cb1937748
GoVersion: go1.26.4-X:nodwarf5
Os: linux
OsArch: linux/amd64
Version: 6.0.0Podman in a container
No
Privileged Or Rootless
Rootless
Upstream Latest Release
Yes
Additional environment details
Running on Arch with the latest Podman release as of this writing.
Additional information
No response
Issue Description
Podman substitutes
TARGETARCH, but fails to correctly resolve dependencies that require it in the following Containerfiles:FROM:COPY --fromDocker correctly resolves the former, although not the latter because it doesn't support substitution in
COPY --from.Steps to reproduce the issue
Steps to reproduce the issue
podman build . --platform linux/amd64,linux/arm64in the directory where you created the ContainerfileDescribe the results you received
Depending on your host architecture, you'll see either
artifacts-amd64orartifacts-arm64being built in both the amd64 build as well as the arm64 one instead of each of them building their respective stages.Then the build fails with the following errors:
FROMcase --Error: [linux/arm64]: creating build container: short-name "artifacts-arm64" did not resolve to an alias and no containers-registries.conf(5) was foundCOPY --fromcase --Error: [linux/arm64]: COPY --from=artifacts-arm64: no stage or image found with that nameDescribe the results you expected
Each build should correctly substitute
TAREGTARCHso that these references work.podman info output
Podman in a container
No
Privileged Or Rootless
Rootless
Upstream Latest Release
Yes
Additional environment details
Running on Arch with the latest Podman release as of this writing.
Additional information
No response