feat(buildah): publish initial werf image with compiled werf binary a…

…nd buildah environment

* Image published by the commit for now: ghcr.io/werf/werf:COMMIT.
* Image includes full buildah environment for now rather than minimal werf dependencies.

scripts/werf-in-docker/Dockerfile

@@ -0,0 +1,15 @@
+FROM ghcr.io/werf/builder:afd00fa1348645658b718df6b2b7447c6cead90b@sha256:829a6fd3d5850fc24366b5a3fb10402fe2d5615dcfd045b7225819c7a8ec5011
+ARG build_version
+ADD cmd /werf/cmd
+ADD pkg /werf/pkg
+ADD go.mod /werf/go.mod
+ADD go.sum /werf/go.sum
+ADD scripts/build_release_v3.sh /werf/scripts/build_release_v3.sh
+RUN cd /werf && go mod download
+RUN cd /werf && ./scripts/build_release_v3.sh $build_version
+
+FROM ghcr.io/werf/buildah:v1.22.3-1
+ARG build_version
+RUN yum install -y git curl gpg
+COPY --from=0 /werf/release-build/$build_version/linux-amd64/bin/werf /usr/local/bin/werf
+ENV WERF_CONTAINER_RUNTIME_BUILDAH=native-rootless

scripts/werf-in-docker/build.sh

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+#!/bin/bash
+
+set -e
+
+BUILD_VERSION="$(git rev-parse HEAD)"
+IMAGE_NAME=ghcr.io/werf/werf:$BUILD_VERSION
+docker build -f scripts/werf-in-docker/Dockerfile --build-arg build_version=$BUILD_VERSION -t $IMAGE_NAME .

scripts/werf-in-docker/publish.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -e
+
+IMAGE_NAME=ghcr.io/werf/werf:"$(git rev-parse HEAD)"
+docker push $IMAGE_NAME