Ask questionsnotes for "Shell form ENTRYPOINT example" need to be cleaned up

File: engine/reference/

These points relate to Several points:

  1. The following Dockerfile does not build:
FROM ubuntu
CMD --ignored-param1
# docker build -t top .
Sending build context to Docker daemon  70.14kB
Error response from daemon: Dockerfile parse error line 6: Unknown flag: ignored-param1
  1. command output conflicts with argument(s?) to docker run in the example given:
$ docker run -it --name test top --ignored-param2

Mem: 1704184K used, 352484K free, 0K shrd, 0K buff, 140621524238337K cached
CPU:   9% usr   2% sys   0% nic  88% idle   0% io   0% irq   0% sirq
Load average: 0.01 0.02 0.05 2/101 7
    1     0 root     S     3168   0%   0% /bin/sh -c top -b cmd cmd2
    7     1 root     R     3164   0%   0% top -b

Command gives --ignored-param2, while output uses cmd cmd2. This is besides the fact that the container's output from top does not reveal the command line arguments for both sh and top; you need to use docker top test for that.

  1. The table at needs to be updated. Specifically the ENTRYPOINT exec_entry p1_entry, with CMD exec_cmd p1_cmd entry. I get /bin/sh -c exec_entry p1_entry sh -c exec_cmd p1_cmd

Answer questions jf

It's either that the table has to be changed.. or the statement that The shell form prevents any CMD or run command line arguments from being used, ... has to be changed.

FROM ubuntu
CMD exec_cmd p1_cmd

docker build ... docker run --name test ... docker top test


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