fix: make Travis install latest dotnet release beta through snap

.travis.yml

@@ -2,44 +2,32 @@ os: linux
 dist: bionic
 language: csharp
 mono: none
-dotnet: 6.0.100-preview.2.21155.3
 solution: Covid19Api.sln
 
 stages:
   - build
-  - test
-  - publish
-  - deploy
+  - invoke-deployment
 
 jobs:
   include:
     - stage: build
       name: dotnet-build
+      addons:
+        snaps:
+          - name: dotnet-sdk
+            confinement: classic
+            channel: 6.0/beta
       if: tag IS NOT present
-      script:
-        - dotnet build
-
-    - stage: test
-      name: dotnet-test
-      before_script:
-        - sudo apt-get update && sudo apt-get install curl -y
-      script:
-        - ./test.sh
-
-    - stage: publish
-      name: docker-container-publish
-      if: tag IS present
-      services:
-        - docker
       before_script:
-        - docker login -u ${REGISTRY_USER} -p ${REGISTRY_PASSWORD} ${REGISTRY}
+        - sudo snap alias dotnet-sdk.dotnet dotnet
       script:
-        - ./publish-docker.sh
-
-    - stage: deploy
-      name: deploy
+        - dotnet build
+          
+    - stage: invoke-deployment
+      name: Invoke Device Deployment
       if: tag IS present
-      before_script:
+      before_script: 
         - curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
+        - az config set extension.use_dynamic_install=yes_without_prompt
       script:
-        - ./deploy-app.sh
+        - ./invoke-deployment.sh

Covid19Api.sln

@@ -27,6 +27,7 @@ ProjectSection(SolutionItems) = preProject
 	test.sh = test.sh
 	execute-database-updates.sh = execute-database-updates.sh
 	execute-database-migrations.sh = execute-database-migrations.sh
+	invoke-deployment.sh = invoke-deployment.sh
 EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Covid19Api.IoC", "src\Covid19Api.IoC\Covid19Api.IoC.csproj", "{783AD7D5-5C4D-4A63-86DE-543B972F3F46}"

invoke-deployment.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+function authenticate() {
+  az login --service-principal -u ${SERVICE_PRINCIPAL_USER} -p ${SERVICE_PRINCIPAL_PASSWORD} --tenant ${SERVICE_PRINCIPAL_TENANT}  
+}
+
+function invoke() {
+  az iot hub invoke-device-method -n ${IOT_HUB_NAME} -d ${IOT_DEVICE_NAME} --mn ${IOT_DEVICE_METHOD_NAME} --mp '{ "tag": "'${TRAVIS_TAG}'" }' --to 60
+}
+
+authenticate
+invoke