How to pass an argument to supervisord in docker?
You could use an environment variable: from supervisor doc
Environment variables that are present in the environment at the time that
supervisordis started can be used in the configuration file using the Python string expression syntax%(ENV_X)s:
[program:example]command=/usr/bin/example --loglevel=%(ENV_LOGLEVEL)sIn the example above, the expression
%(ENV_LOGLEVEL)swould be expanded to the value of the environment variableLOGLEVEL.
In your case, your common argument could be set in an environment variable passed to the container with a docker run -d -e "COMMON_ARG=myarg".