Re: sh -c 'whoami' gives permission error in docker container and puts me in weird prompt/subshell

[ParetoOptimalDev]

Bear with me here, still learning about tramp and how to debug it. Here
is a proper backtrace that shows the error source seems to be 
`tramp-signal-hook-function(wrong-type-argument (stringp nil))`:


17:42:13.200213 tramp-send-command-and-read (10) # 
  backtrace()
  tramp-error((tramp-file-name "docker" nil nil "alpine3173" nil nil nil) 
wrong-type-argument "stringp nil")
  tramp-signal-hook-function(wrong-type-argument (stringp nil))
  format-message(nil)
  error(nil)
  #<subr tramp-send-command-and-read>((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror nil)
  apply(#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf47dd1477011>)(#<subr tramp-send-command-and-read> (tramp-file-name 
"docker" nil nil "alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror)
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dd1477011>) 
#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror))
  tramp-send-command-and-read((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil) "echo \\\"`tty`\\\"" noerror)
  #<subr tramp-open-connection-setup-interactive-shell>(#<process sh> 
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil))
  apply(#<subr tramp-open-connection-setup-interactive-shell> (#<process sh> 
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil)))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf710c86f7011>)(#<subr tramp-open-connection-setup-interactive-shell> 
#<process sh> (tramp-file-name "docker" nil nil "alpine3173" nil nil nil))
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf710c86f7011>) 
#<subr tramp-open-connection-setup-interactive-shell> (#<process sh> 
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil)))
  tramp-open-connection-setup-interactive-shell(#<process sh> (tramp-file-name 
"docker" nil nil "alpine3173" nil nil nil))
  #<subr tramp-maybe-open-connection>((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil))
  apply(#<subr tramp-maybe-open-connection> (tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf710af577011>)(#<subr tramp-maybe-open-connection> (tramp-file-name 
"docker" nil nil "alpine3173" nil nil nil))
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf710af577011>) 
#<subr tramp-maybe-open-connection> (tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil))
  tramp-maybe-open-connection((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil))
  #<subr tramp-send-command>((tramp-file-name "docker" nil nil "alpine3173" nil 
nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?" nil nil)
  apply(#<subr tramp-send-command> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?"))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf513bf137011>)(#<subr tramp-send-command> (tramp-file-name "docker" nil 
nil "alpine3173" nil nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?")
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf513bf137011>) 
#<subr tramp-send-command> ((tramp-file-name "docker" nil nil "alpine3173" nil 
nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?"))
  tramp-send-command((tramp-file-name "docker" nil nil "alpine3173" nil nil 
nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?")
  #<subr tramp-send-command-and-check>((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$" nil nil nil)
  apply(#<subr tramp-send-command-and-check> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$"))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bfa65754b7011>)(#<subr tramp-send-command-and-check> (tramp-file-name 
"docker" nil nil "alpine3173" nil nil nil) "echo $$")
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bfa65754b7011>) 
#<subr tramp-send-command-and-check> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$"))
  tramp-send-command-and-check((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil) "echo $$")
  #<subr tramp-barf-unless-okay>((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil) "echo $$" "`%s' returns with error" "echo $$")
  apply(#<subr tramp-barf-unless-okay> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$" "`%s' returns with error" "echo $$"))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf47dcb2f7011>)(#<subr tramp-barf-unless-okay> (tramp-file-name "docker" 
nil nil "alpine3173" nil nil nil) "echo $$" "`%s' returns with error" "echo $$")
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dcb2f7011>) 
#<subr tramp-barf-unless-okay> ((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil) "echo $$" "`%s' returns with error" "echo $$"))
  tramp-barf-unless-okay((tramp-file-name "docker" nil nil "alpine3173" nil nil 
nil) "echo $$" "`%s' returns with error" "echo $$")
  #<subr tramp-send-command-and-read>((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$" nil nil)
  apply(#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$"))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf47dd1477011>)(#<subr tramp-send-command-and-read> (tramp-file-name 
"docker" nil nil "alpine3173" nil nil nil) "echo $$")
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dd1477011>) 
#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil 
"alpine3173" nil nil nil) "echo $$"))
  tramp-send-command-and-read((tramp-file-name "docker" nil nil "alpine3173" 
nil nil nil) "echo $$")
  #<subr tramp-sh-handle-make-process>(:name "sh" :buffer #<buffer *eshell*> 
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  apply(#<subr tramp-sh-handle-make-process> (:name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf7aef9377011>)(#<subr tramp-sh-handle-make-process> :name "sh" :buffer 
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) 
:filter eshell-interactive-process-filter :sentinel eshell-sentinel 
:connection-type nil :stderr nil :file-handler t)
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf7aef9377011>) 
#<subr tramp-sh-handle-make-process> (:name "sh" :buffer #<buffer *eshell*> 
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t))
  tramp-sh-handle-make-process(:name "sh" :buffer #<buffer *eshell*> :command 
("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  #<subr tramp-sh-file-name-handler>(make-process :name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  apply(#<subr tramp-sh-file-name-handler> (make-process :name "sh" :buffer 
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) 
:filter eshell-interactive-process-filter :sentinel eshell-sentinel 
:connection-type nil :stderr nil :file-handler t))
  #f(compiled-function (body &rest args) #<bytecode 
-0x128bf7aec0837011>)(#<subr tramp-sh-file-name-handler> make-process :name 
"sh" :buffer #<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 
(escaped t))) :filter eshell-interactive-process-filter :sentinel 
eshell-sentinel :connection-type nil :stderr nil :file-handler t)
  apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf7aec0837011>) 
#<subr tramp-sh-file-name-handler> (make-process :name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t))
  tramp-sh-file-name-handler(make-process :name "sh" :buffer #<buffer *eshell*> 
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  apply(tramp-sh-file-name-handler make-process (:name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t))
  #<subr tramp-file-name-handler>(make-process :name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  apply(#<subr tramp-file-name-handler> (make-process :name "sh" :buffer 
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) 
:filter eshell-interactive-process-filter :sentinel eshell-sentinel 
:connection-type nil :stderr nil :file-handler t))
  #f(compiled-function (body &rest args) #<bytecode 0xd0ec2f587d08fec>)(#<subr 
tramp-file-name-handler> make-process :name "sh" :buffer #<buffer *eshell*> 
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  apply(#f(compiled-function (body &rest args) #<bytecode 0xd0ec2f587d08fec>) 
#<subr tramp-file-name-handler> (make-process :name "sh" :buffer #<buffer 
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t))
  tramp-file-name-handler(make-process :name "sh" :buffer #<buffer *eshell*> 
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter 
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type 
nil :stderr nil :file-handler t)
  eshell-gather-process-output("/docker:alpine3173://bin/sh" ("-c" #("whoami" 0 
6 (escaped t))))
  eshell-external-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
  eshell-plain-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
  eshell-named-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
  eval((eshell-named-command '"sh" '("-c" #("whoami" 0 6 (escaped t)))))
  eshell-do-eval((eshell-named-command '"sh" '("-c" #("whoami" 0 6 (escaped 
t)))) nil)
  eshell-do-eval((prog1 (eshell-named-command '"sh" '("-c" #("whoami" 0 6 
(escaped t)))) (mapc #'funcall eshell-this-command-hook)) nil)
  (condition-case err (eshell-do-eval '(prog1 (eshell-named-command '"sh" 
'("-c" #("whoami" 0 6 ...))) (mapc #'funcall eshell-this-command-hook)) nil) 
((debug error) (mapc #'funcall eshell-this-command-hook) (eshell-errorn 
(error-message-string err)) (eshell-close-handles 1)))
  eval((condition-case err (eshell-do-eval '(prog1 (eshell-named-command '"sh" 
'("-c" ...)) (mapc #'funcall eshell-this-command-hook)) nil) ((debug error) 
(mapc #'funcall eshell-this-command-hook) (eshell-errorn (error-message-string 
err)) (eshell-close-handles 1))))
  eshell-do-eval((condition-case err (eshell-do-eval '(prog1 
(eshell-named-command '"sh" '("-c" ...)) (mapc #'funcall 
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall 
eshell-this-command-hook) (eshell-errorn (error-message-string err)) 
(eshell-close-handles 1))) nil)
  #f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
  funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
  (let ((eshell-this-command-hook '(ignore))) (funcall '#f(compiled-function () 
#<bytecode 0x1c62a7ab417757e1>)))
  eval((let ((eshell-this-command-hook '(ignore))) (funcall 
'#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))))
  eshell-do-eval((let ((eshell-this-command-hook '(ignore))) (condition-case 
err (eshell-do-eval '(prog1 (eshell-named-command '"sh" '...) (mapc #'funcall 
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall 
eshell-this-command-hook) (eshell-errorn (error-message-string err)) 
(eshell-close-handles 1)))) nil)
  #f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
  funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
  (let ((eshell-current-handles '[nil (((t) . 2) t) (((t) . 2) t)])) (funcall 
'#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)))
  eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) t)])) 
(funcall '#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))))
  eshell-do-eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) 
t)])) (let ((eshell-this-command-hook '(ignore))) (condition-case err 
(eshell-do-eval '(prog1 (eshell-named-command ... ...) (mapc ... 
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall 
eshell-this-command-hook) (eshell-errorn (error-message-string err)) 
(eshell-close-handles 1))))) nil)
  eshell-do-eval((progn (let ((eshell-current-handles '[nil (... t) (... t)])) 
(let ((eshell-this-command-hook '(ignore))) (condition-case err (eshell-do-eval 
'(prog1 ... ...) nil) ((debug error) (mapc #'funcall eshell-this-command-hook) 
(eshell-errorn (error-message-string err)) (eshell-close-handles 1)))))) nil)
  (catch 'top-level (eshell-do-eval '(progn (let ((eshell-current-handles 
'...)) (let ((eshell-this-command-hook ...)) (condition-case err 
(eshell-do-eval ... nil) (... ... ... ...))))) nil))
  eval((catch 'top-level (eshell-do-eval '(progn (let ((eshell-current-handles 
...)) (let (...) (condition-case err ... ...)))) nil)))
  eshell-do-eval((catch 'top-level (eshell-do-eval '(progn (let 
((eshell-current-handles ...)) (let (...) (condition-case err ... ...)))) nil)) 
nil)
  eshell-do-eval((progn 'nil (catch 'top-level (eshell-do-eval '(progn (let 
(...) (let ... ...))) nil)) (run-hooks 'eshell-post-command-hook)) nil)
  #f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
  funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
  (let ((eshell-current-handles '[nil (((t) . 2) t) (((t) . 2) t)]) 
(eshell-current-subjob-p 'nil)) (funcall '#f(compiled-function () #<bytecode 
0x1c62a7ab417757e1>)))
  eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) t)]) 
(eshell-current-subjob-p 'nil)) (funcall '#f(compiled-function () #<bytecode 
0x1c62a7ab417757e1>))))
  eshell-do-eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) 
t)]) eshell-current-subjob-p) (progn 'nil (catch 'top-level (eshell-do-eval 
'(progn (let ... ...)) nil)) (run-hooks 'eshell-post-command-hook))))
  eshell-resume-eval()
  eshell-eval-command((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 
2) t)]) eshell-current-subjob-p) (progn 'nil (catch 'top-level (eshell-do-eval 
'(progn (let ... ...)) nil)) (run-hooks 'eshell-post-command-hook))) "sh -c 
'whoami'")
  eshell-send-input(nil)
  funcall-interactively(eshell-send-input nil)
  command-execute(eshell-send-input)
17:42:13.200734 tramp-send-command-and-read (1) # Wrong type argument: "Wrong 
type argument", "stringp nil"