Rationale

We have warnings in the code, if on Alpine - See #246

but we now have native musl based shared libraries for the pact_ffi

https://github.com/pact-foundation/pact-reference/releases/tag/libpact_ffi-v0.4.23

• libpact_ffi-linux-aarch64-musl.a.gz
• libpact_ffi-linux-aarch64-musl.so.gz
• libpact_ffi-linux-x86_64-musl.a.gz
• libpact_ffi-linux-x86_64-musl.so.gz

It would be nice to add proper support for these variants in pact-go

Approach

1. When detecting musl, instead of warning user, provide download for *.so musl variant in https://github.com/pact-foundation/pact-go/blob/master/installer/installer.go
2. Update tests to reflect https://github.com/pact-foundation/pact-go/blob/master/installer/installer_test.go
3. Create Dockerfile for golang alpine https://github.com/pact-foundation/pact-go/blob/master/Dockerfile
4. Update Makefile to run either debian or alpine based image

   pact-go/Makefile

   Lines 39 to 58 in a1e63fc

   	docker_build:
   	docker build -f Dockerfile --build-arg GO_VERSION=${GO_VERSION} -t pactfoundation/pact-go-test .
   	docker_test: docker_build
   	docker run \
   	-e LOG_LEVEL=INFO \
   	--rm \
   	pactfoundation/pact-go-test \
   	/bin/sh -c "make test"
   	docker_pact: docker_build
   	docker run \
   	-e LOG_LEVEL=INFO \
   	--rm \
   	pactfoundation/pact-go-test \
   	/bin/sh -c "make pact_local"
   	docker_test_all: docker_build
   	docker run \
   	-e LOG_LEVEL=INFO \
   	--rm \
   	pactfoundation/pact-go-test \
   	/bin/sh -c "make test && make pact_local"

5. Update CI to test amd64 alpine variant

   pact-go/.github/workflows/test.yml

   Lines 69 to 82 in a1e63fc

   	test-containers:
   	runs-on: ubuntu-latest
   	name: ${{ matrix.go-version }}-test-container
   	strategy:
   	fail-fast: false
   	matrix:
   	go-version: ["1.21", "1.22"]
   	steps:
   	- uses: actions/checkout@v4
   	- name: Test dockerfile
   	run: make docker_test_all
   	env:
   	GO_VERSION: ${{ matrix.go-version }}