This patch replaces the default call to "fc" (which is a builtin
function in many shells) to a sed command to work on the alpine
default shell (ash).

--- a/thefuck/shells/generic.py	2018-12-20 16:25:30.217136599 +0000
+++ b/thefuck/shells/generic.py	2018-12-20 16:26:11.156565614 +0000
@@ -35,7 +35,7 @@
 
     def app_alias(self, alias_name):
         return "alias {0}='eval $(TF_ALIAS={0} PYTHONIOENCODING=utf-8 " \
-               "thefuck $(fc -ln -1))'".format(alias_name)
+               "thefuck $(sed -n '\"'x;\\$p'\"' /home/build/.ash_history))'".format(alias_name)
 
     def instant_mode_alias(self, alias_name):
         warn("Instant mode not supported by your shell")