STEP 3/7: RUN mkdir /postgres
--> Using cache 2a2eb42bc8ccb607d0161b1e77327059f4df31b5678e643c3e203f688ab072ff
--> 2a2eb42bc8c
STEP 4/7: ADD postgresql-13.4.tar.bz2 /postgres/ # https://ftp.postgresql.org/pub/source/v13.4/postgresql-13.4.tar.bz2
Error: error building at STEP "ADD postgresql-13.4.tar.bz2 /postgres/ # https://ftp.postgresql.org/pub/source/v13.4/postgresql-13.4.tar.bz2": checking on sources under "/home/mkennedy/pg_show_plans": copier: stat: "/postgres": no such file or directory