Melange continues building the package even though it throws a 'no such file or directory' error during package generation

[Dentrax]

Tested on 0.14.10.

Repro here:

1. Use the following Melange manifest, promitor.yaml:

package:
  name: promitor
  version: 2.11.2
  epoch: 0
  description: Bringing Azure Monitor metrics where you need them.
  copyright:
    - license: MIT
  dependencies:
    runtime:
      - dotnet-8

environment:
  contents:
    packages:
      - busybox
      - dotnet-8-sdk
      - openssf-compiler-options

pipeline:
  - uses: git-checkout
    with:
      repository: https://github.com/tomkerkhove/promitor
      tag: Scraper-v${{package.version}}
      expected-commit: a457a98b6e2920ea2751f4d07d0d8e085946eeec

  - working-directory: src
    pipeline:
      - name: "Build Promitor Scraper"
        runs: |
          # Set runtime arch
          if [[ "${{build.arch}}" == "aarch64" ]]; then
            runtime_arch="arm64"
          elif [[ "${{build.arch}}" == "x86_64" ]]; then
            runtime_arch="x64"
          fi

          dotnet publish \
            Promitor.Agents.Scraper/Promitor.Agents.Scraper.csproj \
            --configuration release \
            --output app \
            --runtime linux-$runtime_arch \
            --no-self-contained \
            /p:Version=${{package.version}} \
            -p:DebugSymbols=false \
            -p:DebugType=none

          mkdir -p "${{targets.contextdir}}"/usr/lib
          cp -dr app "${{targets.contextdir}}"/usr/lib/promitor

          mkdir -p "${{targets.contextdir}}"/usr/bin
          ln -s /usr/lib/promitor/promitor "${{targets.contextdir}}"/usr/bin/promitor

  - uses: strip

2. Run make package/promitor
3. See the Failed to open usr/bin/promitor: open usr/bin/promitor: no such file or directory log
4. Expect the build succeeded and exited with zero