could not find package netcat for docker container

diff --git a/contrib/Dockerfile.tests b/contrib/Dockerfile.tests
index 417daccb21f9bdcbc939d299774d7bbf24b46573..6cc3e4c1e3b5906b1a9e4de899b4bc62c345835d 100644 (file)
--- a/contrib/Dockerfile.tests
+++ b/contrib/Dockerfile.tests
@@ -1,10 +1,8 @@
 FROM gcc:latest
 WORKDIR /usr/src/unbound
-RUN apt-get update
 # install semantic parser & lexical analyzer
-RUN apt-get install -y bison flex
 # install packages used in tests
-RUN apt-get install -y ldnsutils dnsutils xxd splint doxygen netcat
+RUN apt-get update && apt-get install -y bison flex ldnsutils dnsutils xxd splint doxygen netcat-traditional
 # accept short rsa keys, which are used in tests
 RUN sed -i 's/SECLEVEL=2/SECLEVEL=1/g' /usr/lib/ssl/openssl.cnf