feat(docker): enable crb repo

to install some necessary packages for building the static binary

template/cxx/Dockerfile

@@ -5,12 +5,17 @@ WORKDIR /app
 
 # build deps
 RUN dnf upgrade --refresh -y && \
-    dnf install -y \
+    dnf --enablerepo=crb install -y \
         cmake \
         gcc \
         gcc-c++ \
-        make && \
-    dnf clean all
+        make \
+        # enable repo crb to install the following packages for building static binary
+        libstdc++-static \
+        glibc-static && \
+    # due to this Dockerfile is a multi-stage, the following clean steps are redundant.
+    dnf clean all && \
+    rm -fr /var/cache/yum
 
 COPY . .
 
@@ -20,6 +25,6 @@ RUN cmake .. && cmake --build . --target {{project-name}} --config Release --par
 # DEPLOYING
 FROM scratch
 
-COPY --chmod=777 --from=builder /app/build/{{project-name}} /{{project-name}}
+COPY --from=builder /app/build/{{project-name}} /{{project-name}}
 
-CMD ["/{{project-name}}", "-"]
+CMD ["/{{project-name}}"]