Make makefile more targeted by refactoring. Add new multistage dockerfile

Remove separate targets for release.
Replace travis-ci with github-actions

Signed-off-by: Jguer <me@jguer.space>

testdata/travis.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -evx
+
+# Objective of this script is to be the most vendor agnostic possible
+# It builds and tests yay independently of hardware
+
+export VERSION=$(git describe --long --tags | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g')
+export ARCH="x86_64"
+
+docker build --build-arg BUILD_ARCH=${ARCH} --target builder_env -t yay-builder_env .
+docker build --build-arg BUILD_ARCH=${ARCH} --target builder -t yay-builder .
+
+# Our unit test and packaging container
+docker run --name yay-go-tests yay-builder_env:latest make test
+docker rm yay-go-tests
+
+# docker run yay-builder make lint
+
+# Build image for integration testing
+docker build -t yay .
+
+# Do integration testing
+# TODO
+
+# Create a release asset
+docker run --name artifact_factory yay-builder make release ARCH=${ARCH} VERSION=${VERSION}
+
+# Copy bin and release to workdir
+docker cp artifact_factory:/app/yay yay
+docker cp artifact_factory:/app/yay_${VERSION}_${ARCH}.tar.gz .
+
+# Cleanup docker
+docker rm artifact_factory