ci: introduce in ci the compilation testing on different os

Changelog-None: introduce in ci the compilation testing on different os

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

.github/workflows/ci_build.yml

@@ -0,0 +1,17 @@
+name: CI Compilation testing
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { OS: alpine }
+    steps:
+      - uses: actions/checkout@v2
+      - name: Integration testing
+        run: |
+          docker build -f contrib/docker/Dockerfile.${{matrix.OS}} -t clightning-${{matrix.OS}} .

contrib/docker/Dockerfile.alpine

@@ -0,0 +1,23 @@
+FROM alpine:3.14.3
+LABEL org.opencontainers.image.authors="Vincenzo Palazzo (@vincenzopalazzo) vincenzopalazzodev@gmail.com"
+
+WORKDIR /build
+
+RUN apk update && \
+    apk add ca-certificates alpine-sdk autoconf automake git libtool \
+    gmp-dev sqlite-dev python3 py3-mako net-tools zlib-dev libsodium gettext su-exec \
+    python3 py3-pip #&& \
+    #apk add --upgrade fortify-headers
+
+RUN mkdir lightning
+COPY . lightning
+
+RUN cd lightning && \
+    git submodule update --init --recursive && \
+    ./configure && \
+    pip3 install mrkd mistune==0.8.4 && \
+    make -j$(nproc) && \
+    make install
+
+# TODO: review entry point here, to make this availale for the user
+CMD ["lightningd", "--version"]