Environment variable on Docker CMD

Asked May 14 '22 at 13:38

Active May 14 '22 at 13:38

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Is it possible to use an environment variable on Docker's CMD?

I tried this

CMD ["/caddy", "file-server", "--browse", "--listen", $PORT]

But I got the error

docker: Error response from daemon: failed to create shim: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "/bin/sh": stat /bin/sh: no such file or directory: unknown.

ERRO[0001] error waiting for container: context canceled

asked May 14 '22 at 13:38

Rodrigo

Only with the shell syntax; `CMD /caddy ... --listen "$PORT"`, not with the JSON-array syntax. – David Maze May 14 '22 at 13:43
The question is off-topic on SO – Vega May 14 '22 at 14:00

Environment variable on Docker CMD

0 Answers0