Improve Bash Deployment Scripts for Robust Error Handling (#200)

### Summary & Motivation

Address error handling in infrastructure Bash deployment scripts to
correct the issue where the output of Bicep commands piped to `tee
/dev/tty` fails in non-interactive environments. Modify the piping to
`2>&1` to capture both `stdout` and `stderr` reliably across different
contexts.

Introduce `#!/bin/bash` shebang to all infrastructure scripts to
standardize execution behavior and formatting, aligning the local
terminal experience with that of GitHub Actions.

### Checklist

- [x] I have added a Label to the pull-request
- [x] I have added tests, and done manual regression tests
- [x] I have updated the documentation, if necessary

cloud-infrastructure/cluster/config/development-west-europe.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="development"
 LOCATION="WestEurope"
 LOCATION_PREFIX="west-europe"

cloud-infrastructure/cluster/config/production-west-europe.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="production"
 LOCATION="WestEurope"
 LOCATION_PREFIX="west-europe"

cloud-infrastructure/cluster/config/staging-west-europe.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="staging"
 LOCATION="WestEurope"
 LOCATION_PREFIX="west-europe"

cloud-infrastructure/deploy.sh

@@ -19,5 +19,5 @@ fi
 if [[ "$*" == *"--apply"* ]]
 then
     echo "$(date +"%Y-%m-%dT%H:%M:%S") Applying changes..."
-    export output=$($DEPLOYMENT_COMMAND $DEPLOYMENT_PARAMETERS | tee /dev/tty)
+    export output=$($DEPLOYMENT_COMMAND $DEPLOYMENT_PARAMETERS 2>&1)
 fi

cloud-infrastructure/environment/config/development.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="development"
 LOCATION="WestEurope"
 

cloud-infrastructure/environment/config/production.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="production"
 LOCATION="WestEurope"
 

cloud-infrastructure/environment/config/staging.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="staging"
 LOCATION="WestEurope"
 

cloud-infrastructure/shared/config/shared-development.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 
 ENVIRONMENT="development"
 LOCATION="WestEurope"

cloud-infrastructure/shared/config/shared.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ENVIRONMENT="production"
 LOCATION="WestEurope"