add put file functionality

[jarlah]

• fix test
• improve test

[jarlah]

🥳

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  | |/ _ \/ __| __/ __/ _ \| '_ \| __/ _\` | | '_ \/ _ \ '__/ __| | | | / _ \/ __| |/ / __/ _ \| '_ \
  | |  __/\__ \ || (_| (_) | | | | || (_| | | | | |  __/ |  \__ \ | |/ /  __/\__ \   <| || (_) | |_) |
  |_/\___||___/\__\___\___/|_| |_|\__\__,_|_|_| |_|\___|_|  |___/ |___/ \___||___/_|\_\\__\___/| .__/
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Welcome to the TCD Terminal.
This terminal is attached to a docker container that is running on your current worker tcd/23.0.6 (via Testcontainers Desktop 1.5.3).

Available tooling depends on the container image (nginx:alpine).
/ # cd tmp/
/tmp # ls
foo.txt
/tmp # cat foo.txt 
Hello foo bar/tmp # 

[jarlah]

@Argonus look at this PR, I think this can be used together with with_cmd, a cmd that waits for a file to be present and sleeps until it is, and then executes the file. Much in same way java implementation of kafka has a cmd that waits for /testcontainers-start.sh to exist and then runs it.

[Argonus]

Let's merge this :)