SES-79 Try configs for Dockerfile and Jenkinsfile

SessionCompanion/Dockerfile

@@ -0,0 +1,8 @@
+FROM mcr.microsoft.com/dotnet/sdk:5.0
+
+ADD . /App
+WORKDIR /App
+
+EXPOSE 5001
+
+CMD 'dotnet' 'build'

SessionCompanion/Jenkinsfile

@@ -0,0 +1,11 @@
+pipeline {
+    def app
+    
+    stage('Build image') {
+        checkout scm
+        app = docker.build("session-companion:${env.BUILD_ID}")
+    }
+    stage('Build app') {
+        docker.image("session-companion:${env.BUILD_ID}").withRun(-p 8080:8080)
+    }
+}