Why won't my docker-entrypoint.sh execute?

Question

My ENTRYPOINT script doesn\'t execute and throws standard_init_linux.go:175: exec user process caused \"no such file or directory\". Why so?

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Answer 1

Sorry for hacking -- this is not a response to the question, but a description of a different problem and it's solution that has the same symptoms.

I had

ENTRYPOINT ["/usr/bin/curl", "-X", "POST", "http://myservice:8000", \
              "-H", "Content-Type: application/json", \
              "-d", '{"id": "test"}' \
]

I was getting the error:

/bin/bash: [/usr/bin/curl,: No such file or directory

It turns out it's the single quotes that messed it up. Docker documentation has a note:

The exec form is parsed as a JSON array, which means that you must use double-quotes (“) around words not single-quotes (‘). Blockquote

Solution -- use double quotes instead of single and escape nested double quotes:

ENTRYPOINT ["/usr/bin/curl", "-X", "POST", "http://myservice:8000", \
              "-H", "Content-Type: application/json", \
              "-d", "{\"id\": \"test\"}" \
]