This is just FYI, but I did some recent testing on Alpine and I discovered that netty-tcnative-boringssl-static works without issue on standard Alpine.

For openjdk:8-jre-alpine, I ran apk update && apk add libc6-compat while generating the docker image.

For alpine:latest, I ran apk update && apk add openjdk8-jre-base libc6-compat.

adoptopenjdk/openjdk8:alpine-slim and adoptopenjdk/openjdk11:alpine-slim worked out-of-the-box.

$ docker build --build-arg NETTY_TCNATIVE_TAG=netty-tcnative-parent-2.0.7.Final -t pires/netty-tcnative-alpine:2.0.7.Final .

$ mkdir binaries
$ docker run -v `pwd`/binaries:/output pires/netty-tcnative-alpine:2.0.7.Final

$ ls -lh binaries

FROM alpine:3.7

RUN apk add --update libuuid