Copy the CA certificates to final image

The busybox image does not contain CA certificares. This adds them from
the builder stage.

Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>

Dockerfile

@@ -45,5 +45,6 @@ COPY --from=builder /opt/garm/providers.d/garm-provider-gcp /opt/garm/providers.
 COPY --from=builder /opt/garm/providers.d/garm-provider-equinix /opt/garm/providers.d/garm-provider-equinix
 
 COPY --from=builder /opt/garm/providers.d/garm-provider-k8s /opt/garm/providers.d/garm-provider-k8s
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 
 ENTRYPOINT ["/bin/garm", "-config", "/etc/garm/config.toml"]