Resolve proto directory dynamically for dotnet cartservice (#1579)

This allows the solutio to be opened in any .NET editor and compile right away.

Removes the requirement to manually copy the proto files.

This also now copies the protofiles into the docker container using the original folder name.

Co-authored-by: Pierre Tessier <pierre@pierretessier.com>

Author: Mpdreamz

src/cartservice/README.md

@@ -6,11 +6,9 @@ This service stores user shopping carts in Redis.
 
 Run `dotnet restore` and `dotnet build`.
 
-Protobufs must be present in `./src/protos`
-
 ## Docker Build
 
-From the root directory, run:
+From the root directory of this repository, run:
 
 ```sh
 docker compose build cartservice

src/cartservice/src/Dockerfile

@@ -21,7 +21,7 @@ ARG TARGETARCH
 WORKDIR /usr/src/app/
 
 COPY ./src/cartservice/ ./
-COPY ./pb/ ./src/protos/
+COPY ./pb/ ./pb/
 
 RUN dotnet restore ./src/cartservice.csproj -v d -r linux-musl-$TARGETARCH
 

src/cartservice/src/cartservice.csproj

@@ -7,6 +7,11 @@
     <PublishSingleFile>true</PublishSingleFile>
     <SelfContained>true</SelfContained>
     <PublishTrimmed>false</PublishTrimmed>
+    <ProtosDir>$(ProjectDir)..\pb</ProtosDir>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="!Exists('$(ProtosDir)')">
+    <ProtosDir>..\..\..\pb</ProtosDir>
   </PropertyGroup>
 
   <ItemGroup>
@@ -29,6 +34,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Protobuf Include="**\*.proto" GrpcServices="Both" />
+    <Protobuf Include="$(ProtosDir)\**\*.proto" GrpcServices="Both" />
   </ItemGroup>
 </Project>