Docker - curl issue downloading pre-configured external packages

i am running docket based on CentOS Linux release 7.8.2003
with the following changes:

gcc 7.4.0

cmake 3.14.2

curl-7.63.0 installed and configured with "--with-ssl" to support https


but when running the following commands i receive an error:

cd ~ git clone https://github.com/Refinitiv/Elektron-SDK.git cmake -H~/Elektron-SDK -B~/Elektron-SDK-release


   error: downloading 'https://github.com/Refinitiv/Real-Time-SDK/releases/download/Real-Time-SDK-1.5.1.L1/RTSDK-BinaryPack-1.5.1.L1.tar.xz' failed          status_code: 1          status_string: "Unsupported protocol"          log:          --- LOG BEGIN ---          Protocol "https" not supported or disabled in libcurl   Closing connection -l 

but running curl --version gives:

curl 7.63.0 (x86_64-pc-linux-gnu) libcurl/7.63.0 OpenSSL/1.0.2k zlib/1.2.7 Release-Date: 2018-12-12 Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp  Features: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL libz UnixSockets HTTPS-proxy 


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