container: Fix kcl runtime

As it turns out, KCL literally *compiles* a program from the KCL
sources.  The program it creates needs to link with its runtime library,
`libkclvm_cli_cdylib.so`.  The `kcl` command extracts this library,
along with a helper utility `kclvm_cli`, which performs the actual
compilation and linking.  In a container, `/root/go` is probably mounted
read-only, so we need to extract these files ahead of time and put them
in another location, so the `kcl` command does not have to do it each
time it runs.

Containerfile

@@ -10,7 +10,8 @@ RUN --mount=type=cache,target=/var/cache \
 
 RUN --mount=type=cache,target=/root/go \
 	go install kcl-lang.io/cli/cmd/kcl@v0.7 \
-	&& cp /root/go/bin/kcl /usr/local/bin \
+	&& /root/go/bin/kcl > /dev/null \
+	&& cp /root/go/bin/* /usr/local/bin/ \
 	&& :
 
 RUN --mount=type=cache,target=/root/.cargo \
@@ -26,6 +27,7 @@ RUN --mount=type=cache,target=/var/cache \
 	microdnf install -y \
 		--setopt install_weak_deps=0 \
 		age \
+		gcc \
 		git \
 	&& cp -a /build/usr/local/bin/. /usr/local/bin \
 	&& for cmd in \
@@ -40,5 +42,9 @@ COPY config.sh /
 
 CMD ["/config.sh"]
 
+ENV KCL_GO_DISABLE_ARTIFACT=on
+ENV KCL_PKG_PATH=/tmp
+ENV KCL_CACHE_PATH=/tmp
+
 LABEL license= \
 	vendor='Dustin C. Hatch' \