Update dockerfile

[Maus-313]

added /usr for three libs

before fixing this error ->
docker output:=>

ERROR [final 14/20] COPY --from=builder /lib/libz.so.1 /lib/                                    0.0s 
 => ERROR [final 15/20] COPY --from=builder /lib/libssl.so.3 /lib/                                  0.0s 
 => ERROR [final 16/20] COPY --from=builder /lib/libcrypto.so.3 /lib/                               0.0s 
------
 > [final 14/20] COPY --from=builder /lib/libz.so.1 /lib/:
------
------
 > [final 15/20] COPY --from=builder /lib/libssl.so.3 /lib/:
------
------
 > [final 16/20] COPY --from=builder /lib/libcrypto.so.3 /lib/:

which means the library is missing at the location we defined. So I get the official latest alpine image from the docker hub to find this file. Using the docker desktop I check the "Files" of this container. I found that these three files' positions have been changed from "/lib" to "/usr/lib".

[cfsmp3]

Can you add to the description how this was tested? (copy-paste output of docker build for example).

[Maus-313]

Sir, I have revised the description. Is it now sufficiently informative?