Work CI-CD

- Enable caching nuget packages in pipeline.
- Add package.lock to projects.

***NO_CI***

Author: josesimoes

azure-pipelines.yml

@@ -182,6 +182,7 @@ jobs:
     buildPlatform: 'x64'
     buildConfiguration: 'Release'
     solution: 'nanoFirmwareFlasher.sln'
+    NUGET_PACKAGES: $(Pipeline.Workspace)/.nuget/packages
     run_update_dependents: $[dependencies.Check_Build_Options.outputs['BuildOptions.RUN_UPDATE_DEPENDENTS']]
 
   steps:
@@ -214,6 +215,15 @@ jobs:
         eq(variables['UPDATE_DEPENDENTS'], 'true')
     displayName: Set Could Version
 
+  - task: Cache@2
+    displayName: Cache NuGet packages
+    inputs:
+      key: 'nuget | "$(Agent.OS)" | **/packages.lock.json, !bin/**'
+      restoreKeys: |
+          nuget | "$(Agent.OS)"
+          nuget
+      path: $(NUGET_PACKAGES)
+
   - task: DotNetCoreCLI@2
     displayName: Restore NuGet packages
     condition: >-
@@ -223,6 +233,7 @@ jobs:
       )
     inputs:
       command: restore
+      restoreArguments: '--locked-mode'
       verbosityRestore: minimal
       projects: nanoFirmwareFlasher.sln
       feedsToUse: config

nanoFirmwareFlasher.Library/nanoFirmwareFlasher.Library.csproj

@@ -17,16 +17,18 @@
     <PackageProjectUrl>https://github.com/nanoframework/nanoFirmwareFlasher</PackageProjectUrl>
     <PackageIconUrl></PackageIconUrl>
     <Description>.NET nanoFirmwareFlasher tool to flash firmware images to target devices.</Description>
-  </PropertyGroup>
-
-  <PropertyGroup>
     <!-- disable NuGet warning for DLLs outside the lib folder and for SemVer 2 package reference -->
     <NoWarn>$(NoWarn);NU5100;NU5105</NoWarn>
     <PackageLicenseFile>LICENSE.md</PackageLicenseFile>
     <PackageIcon>images\nf-logo.png</PackageIcon>
     <PackageTags>nanoFramework, nano Framework, NETNF, NETMF, Micro Framework, .net</PackageTags>
     <PackageReadmeFile>README.md</PackageReadmeFile>
+  </PropertyGroup>
+
+  <PropertyGroup>
     <GenerateDocumentationFile>True</GenerateDocumentationFile>
+		<RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
+		<RestoreLockedMode>true</RestoreLockedMode>
   </PropertyGroup>
 
     <Target Name="CopyToolsContent" AfterTargets="Build">