Docker: drop unneeded packages from Fedora build

Do not install the "Development Tools" group which contains a lot of
packages not necessary for bpftrace build (in fact, we should be
instaling the "C Development Tools and Libraries" group, but that one
still contains a lot of packages).

Instead, install only the minimal packages necessary.

docker/Dockerfile.fedora

@@ -4,21 +4,24 @@
 
 FROM fedora:rawhide
 
-RUN dnf -y groupinstall "Development Tools" && \
-    dnf install -y \
+RUN dnf install -y \
         asciidoctor \
         bison \
         binutils-devel \
         bcc-devel \
         cereal-devel \
         clang-devel \
         cmake \
+        elfutils-devel \
         elfutils-libelf-devel \
         elfutils-libs \
         flex \
+        gcc \
+        gcc-c++ \
         libpcap-devel \
         libbpf-devel \
         llvm-devel \
+        make \
         systemtap-sdt-devel \
         zlib-devel