[suggestion] [ci] improve iroha2 build

[BAStos525]

Feature request

After merging this PR, Soramitsu DevOps team has to improve a couple of things in the iroha2 CI:

• separate building of iroha2:base docker image into a dedicated workflow which runs on Dockerfile.ci change, and replace 7272721/i2-ci:latest in .container.image with hyperledger/iroha2:env
• the CI task Build and push iroha2:dev docker image for iroha2:dev, iroha2:stable, iroha2:release images works only as bash command to build and push the corresponding docker image. For some reason, GH Action docker/build-push-action@v3 fails with following error:
  buildx failed with: error: failed to solve: failed to compute cache key: failed to calculate checksum of ref x8jvn8e81it8h6cbjf205gxgt::u6fgfckzgk3t5lxzms465fgd1: failed to walk /tmp/buildkit-mount878509508/release: lstat /tmp/buildkit-mount878509508/release: no such file or directory
  DevOps team could try to resolve this issue if it is possible.

Motivation

To make iroha2 CI faster, more effective and reliable.

Who can help?

@appetrosyan @s8sato

[appetrosyan]

A few corrections, we should never push a non-iroha image into a separate tag, instead we fought hard and won an image called iroha2-ci which we can use to pin the version of Iroha to the container that was used to test and build it (so LTS has its own, while the normal image has a separate image).

[BAStos525]

Also we have to decide what to do with rust-toolchain.toml file according to this comment

[s8sato]

Check if the coverage behaves as expected after #2433 @s8sato

[s8sato]

https://github.com/hyperledger/iroha/runs/7463816572

[s8sato]

https://github.com/hyperledger/iroha/runs/7463817017

[BAStos525]

https://github.com/hyperledger/iroha/runs/7463816572

dawidd6/action-download-artifact@v2.21.1 action extracts an artifact as it is named in mold --run cargo llvm-cov... test:

==> Extracting: lcov-0c3b217c27f218ae50f96606e4c1d9395fa48d03.info.zip
    inflating: lcov.info

ls la:
-rw-rw-rw- 1 root root 11238732 Jul 24 14:51 lcov.info
This a reason why we can not rename it:

Run mv lcov-0c3b217c27f218ae50f96606e4c1d9395fa48d03.info lcov.info
mv: cannot stat 'lcov-0c3b217c27f218ae50f9[6](https://github.com/BAStos525/soramitsu-iroha/runs/7488733522?check_suite_focus=true#step:6:7)606e4c1d9395fa48d03.info': No such file or directory

---

There are a two ways to avoid it:

1. Just to remove the renaming action from I2::Dev::Deploy workflow.
2. Generate a lcov report wtih PR head SHA variable:

iroha2-dev-pr.yaml

  tests_with_coverage:
    runs-on: ubuntu-latest
    container:
      image: 7272721/i2-ci:latest
    steps:
      - uses: actions/checkout@v2

      # TODO Remove these steps #2165
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true
          components: llvm-tools-preview
      - uses: taiki-e/install-action@cargo-llvm-cov
      - uses: Swatinem/rust-cache@v1
      - name: Run tests and generate lcov coverage report
        run: mold --run cargo llvm-cov --all-features --workspace --lcov --output-path lcov-${{ github.event.pull_request.head.sha }}.info
      - name: Upload to codecov
        uses: codecov/codecov-action@v3
        with:
          file: lcov-${{ github.event.pull_request.head.sha }}.info
          fail_ci_if_error: true
      - name: Upload codecov report artifact
        uses: actions/upload-artifact@v3
        with:
          name: lcov-${{ github.event.pull_request.head.sha }}.info
          path: lcov-${{ github.event.pull_request.head.sha }}.info

iroha2-dev.yaml

  upload_coverage:
    if: github.event.pull_request.merged
    runs-on: ubuntu-latest
    container:
      image: 7272721/i2-ci:latest
    steps:
      - uses: actions/checkout@v2
      - name: Download codecov report artifact
        uses: dawidd6/action-download-artifact@v2.21.1
        with:
          workflow: iroha2-dev-pr.yml
          name: lcov-${{ github.event.pull_request.head.sha }}.info
          search_artifacts: true
      - name: Upload to codecov
        uses: codecov/codecov-action@v3
        with:
          files: lcov-${{ github.event.pull_request.head.sha }}.info

[BAStos525]

https://github.com/hyperledger/iroha/runs/7463817017

This is weird. I suppose that there is not a problem in secrets due iroha1 uses the same credentials for dockerhub account, and there are no an errors from iroha1 pushing images. May be try to come back to docker/login-action@v1?

[BAStos525]

It seems like print-telemetry job in I2::Dev::Deploy workflow has been broken with new ci-image. We see only |null|null|null| content as output of this job.

[s8sato]

Closed as main topics were resolved by #2576.
Remaining topics within this issue are #2646, #2606, and the toolchain file.
If I'm missing anything please newly create issues @BAStos525 @appetrosyan