mysql Dockerfile doesn't compile

[Giancarlo1974]

I tried to build the Dockerfile

https://github.com/pockost/docker-proftpd/blob/master/mysql/Dockerfile.real

but i got this error:

mod_sql.c: In function 'sql_auth_openssl':
mod_sql.c:757:14: error: storage size of 'md_ctx' isn't known
EVP_MD_CTX md_ctx;
^~~~~~
mod_sql.c:757:14: warning: unused variable 'md_ctx' [-Wunused-variable]
make[1]: *** [Makefile:31: mod_sql.o] Error 1
make[1]: Leaving directory '/usr/local/proftpd/modules'
make: *** [Makefile:39: modules] Error 2
ERROR: Service 'proftpd' failed to build: The command '/bin/sh -c set -x && cd /usr/local/proftpd && sed -i 's/__mempcpy/mempcpy/g' lib/pr_fnmatch.c && ./configure --with-modules=mod_sql:mod_sql_mysql:mod_quotatab:mod_quotatab_sql:mod_sftp:mod_sftp_sql --with-includes=/usr/include/mysql/ && make' returned a non-zero code: 2

Can you help ne?