Docerfile not work

[DimaMSISur]

I try to make container on ubuntu, which should output "Hello" on terminal. I have main.zsh:

#!/usr/bin/zsh

echo "Hello"

And I have Containerfile:

FROM ubuntu:latest
WORKDIR /app
COPY main.zsh /app/hello.zsh
RUN chmod +x ./hello.zsh
CMD ./hello.zsh

When I run this container I have this error:

podman run localhost/hello:latest
/bin/sh: 1: ./hello.zsh: not found

Help me pls...

[eriksjolund]

/usr/bin/zsh is missing in the container image. It worked when I added this line.

--- Containerfile	2025-04-20 13:37:09.573090400 +0200
+++ Containerfile.new	2025-04-20 13:36:58.878842310 +0200
@@ -1,4 +1,5 @@
 FROM ubuntu:latest
+RUN apt-get update && apt-get install -y zsh
 WORKDIR /app
 COPY main.zsh /app/hello.zsh
 RUN chmod +x ./hello.zsh