MINIFICPP-711: Fix imports and installs for Docker make target

This closes #516.

Signed-off-by: Aldrin Piri <aldrin@apache.org>
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 6ed4bf8..c5d780e 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -47,6 +47,8 @@
 	curl-dev \
 	cmake \
 	git \
+	nss \
+	nss-dev \
 	unzip \
 	gpsd-dev \
 	libressl-dev \
@@ -97,8 +99,10 @@
 	gpsd \
 	openjdk8-jre-base \
 	openjdk8 \
+	nss \
+	nss-dev \
 	libressl \
-	python \
+	python3 \
 	zlib
 
 # Start MiNiFi CPP in the foreground