test: force ipv4 DNS preference within containers

system-test/Dockerfile.linux

@@ -1,7 +1,7 @@
 FROM golang:1.17-stretch as builder
 RUN apt-get update && apt-get install -y \
     git \
- && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/*
 WORKDIR /root/
 RUN go get github.com/google/pprof
 
@@ -12,7 +12,9 @@ ARG ADDITIONAL_PACKAGES
 ARG VERIFY_TIME_LINE_NUMBERS
 
 RUN apt-get update && apt-get install -y curl $ADDITIONAL_PACKAGES \
-    && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/* \
+    # workaround needed to force ipv4 on kokoro
+    && echo "precedence ::ffff:0:0/96 100" >> /etc/gai.conf
 
 ENV NVM_DIR /bin/.nvm
 RUN mkdir -p $NVM_DIR

system-test/Dockerfile.node-alpine

@@ -9,7 +9,10 @@ FROM node:${NODE_VERSION}-alpine
 
 ARG ADDITIONAL_PACKAGES
 
-RUN apk add --no-cache bash $ADDITIONAL_PACKAGES
+RUN apk add --no-cache bash $ADDITIONAL_PACKAGES \
+	# workaround needed to force ipv4 on kokoro
+	&& echo "precedence ::ffff:0:0/96 100" >> /etc/gai.conf
+
 WORKDIR /root/
 COPY --from=builder /go/bin/pprof /bin
 RUN chmod a+x /bin/pprof

system-test/system_test.sh

@@ -10,11 +10,15 @@ set -eox pipefail
 
 cd $(dirname $0)
 
+echo "------------- DEBUGGGGG system_test.sh"
+cat /etc/gai.conf
+node -e 'const dns = require("dns"); dns.lookup("registry.npmjs.org", (err, address, family) => {console.log(err, address, family);});'
+
 # The list of tested versions below should be in sync with node's
 # official releases. https://nodejs.org/en/about/releases/
 if [[ -z "$BINARY_HOST" ]]; then
   ADDITIONAL_PACKAGES="python3 g++ make"
-  NODE_VERSIONS=(14 16 18 19)
+  NODE_VERSIONS=(18)
 else
   # Tested versions for pre-built binaries are limited based on
   # what node-pre-gyp can specify as its target version.
@@ -30,7 +34,7 @@ for i in ${NODE_VERSIONS[@]}; do
   docker run  -v $PWD/..:/src -e BINARY_HOST="$BINARY_HOST" node$i-linux \
       /src/system-test/test.sh
 
-  docker run  -v $PWD/..:/src -e BINARY_HOST="$BINARY_HOST" \
+  docker run --sysctl net.ipv6.conf.all.disable_ipv6=1 --sysctl net.ipv6.conf.default.disable_ipv6=1 -v $PWD/..:/src -e BINARY_HOST="$BINARY_HOST" \
       -e VERIFY_TIME_LINE_NUMBERS="true" node$i-linux \
       /src/system-test/test.sh
 
@@ -39,7 +43,7 @@ for i in ${NODE_VERSIONS[@]}; do
       --build-arg ADDITIONAL_PACKAGES="$ADDITIONAL_PACKAGES" \
       --build-arg NODE_VERSION=$i -t node$i-alpine .
 
-  docker run -v $PWD/..:/src -e BINARY_HOST="$BINARY_HOST" node$i-alpine \
+  docker run --sysctl net.ipv6.conf.all.disable_ipv6=1 --sysctl net.ipv6.conf.default.disable_ipv6=1 -v $PWD/..:/src -e BINARY_HOST="$BINARY_HOST" node$i-alpine \
       /src/system-test/test.sh
 done
 

system-test/test.sh

@@ -25,6 +25,10 @@ cd "$SRCDIR"
 
 NODEDIR=$(dirname $(dirname $(which node)))
 
+echo "------------- DEBUGGGGG test.sh"
+cat /etc/gai.conf
+node -e 'const dns = require("dns"); dns.lookup("registry.npmjs.org", (err, address, family) => {console.log(err, address, family);});'
+
 retry npm_install --nodedir="$NODEDIR" \
     ${BINARY_HOST:+--pprof_binary_host_mirror=$BINARY_HOST} >/dev/null