Merge "Fix container test image"

test_container/Dockerfile

@@ -1,5 +1,7 @@
-FROM scratch
+FROM alpine:3.12
+
 ADD rootfs.tar.xz /
+RUN apk update && apk add iputils
 RUN adduser -S kuryr
 
 USER kuryr

test_container/Dockerfile.builder

@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.12
 
 RUN apk add --no-cache \
 		bash \
@@ -13,7 +13,7 @@ RUN apk add --no-cache \
 		perl \
 		tzdata
 
-ENV BUSYBOX_VERSION 1.29.0
+ENV BUSYBOX_VERSION 1.31.1
 
 RUN set -ex; \
 	tarball="busybox-${BUSYBOX_VERSION}.tar.bz2"; \

test_container/curl_builder.sh

@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 
 # Names of latest versions of each package
-export VERSION_MUSL=musl-1.1.18
+export VERSION_MUSL=musl-1.2.0
 export VERSION_ZLIB=zlib-1.2.11
-export VERSION_LIBRESSL=libressl-2.6.3
-export VERSION_CURL=curl-7.58.0
+export VERSION_LIBRESSL=libressl-3.2.1
+export VERSION_CURL=curl-7.72.0
 
 # URLs to the source directories
 export SOURCE_MUSL=http://www.musl-libc.org/releases/