Improve layer caching in Docker build

.config/dotnet-tools.json

@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "microsoft.web.librarymanager.cli": {
+      "version": "2.1.175",
+      "commands": [
+        "libman"
+      ]
+    }
+  }
+}

.dockerignore

@@ -0,0 +1,10 @@
+.git/
+.github/
+.vs/
+.vscode/
+**/bin/
+**/obj/
+*.csproj.user
+
+Groceries/wwwroot/lib/
+Groceries/config_development.ini

Dockerfile

@@ -1,17 +1,32 @@
 FROM mcr.microsoft.com/dotnet/sdk:7.0-alpine AS build
 WORKDIR /src
-COPY . ./
-WORKDIR Groceries
+
+COPY ./.config ./
+RUN dotnet tool restore
+
+COPY ./Groceries.sln ./
+COPY */*.csproj ./
+RUN for file in $(ls *.csproj); do mkdir -p ${file%.*} && mv $file ${file%.*}; done
 RUN dotnet restore
+
+COPY ./Groceries/libman.json ./
+WORKDIR Groceries
+RUN dotnet libman restore
+
+COPY . ../
 RUN dotnet publish --no-restore --output /out
 
 FROM mcr.microsoft.com/dotnet/aspnet:7.0-alpine AS base
 WORKDIR /groceries
+
 COPY --from=build /out .
 COPY --from=build /src/Groceries/config.ini /config/
+
 RUN apk add --no-cache icu-libs tzdata
+
 ENV DOTNET_ENABLEDIAGNOSTICS=0
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
+
 EXPOSE 80
 VOLUME /config
 ENTRYPOINT ["./Groceries", "--data", "/config"]

Groceries.sln

@@ -9,6 +9,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Groceries.Data", "Groceries
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{D3B5FF09-44D2-491B-9663-0962BE0D1EBE}"
 	ProjectSection(SolutionItems) = preProject
+		.dockerignore = .dockerignore
 		.editorconfig = .editorconfig
 		.gitignore = .gitignore
 		Dockerfile = Dockerfile

Groceries/Groceries.csproj

@@ -13,7 +13,6 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="7.0.9" />
-        <PackageReference Include="Microsoft.Web.LibraryManager.Build" Version="2.1.175" />
     </ItemGroup>
 
     <ItemGroup>