feat(repo): add dotnet buildscripts (aws-samples#229)

- Adds dotnet build script build-csharp.sh and modified build.sh to run the former
- Minor fixes to build scripts to improve consistency

scripts/build-csharp.sh

@@ -0,0 +1,23 @@
+ #!/bin/bash
+ set -euo pipefail
+ scriptdir=$(cd $(dirname $0) && pwd)
+
+ # install CDK CLI from npm, so that npx can find it later
+ cd $scriptdir/../csharp
+ npm install
+
+# Find and build all CSharp projects
+for projFile in $(find $scriptdir/../csharp -name cdk.json); do
+    (
+        echo "=============================="
+        echo "building project: $projFile"
+        echo "=============================="
+
+        cd $(dirname $projFile)
+        if [[ -f DO_NOT_AUTOTEST ]]; then exit 0; fi
+
+        dotnet build src
+
+        $scriptdir/synth.sh
+    )
+done

scripts/build-java.sh

@@ -9,8 +9,13 @@ npm install
 # Find and build all Maven projects
 for pomFile in $(find $scriptdir/../java -name pom.xml); do
     (
+        echo "=============================="
+        echo "building project: $(dirname $pomFile)"
+        echo "=============================="
+
         cd $(dirname $pomFile)
-        echo "Building project at $(dirname $pomFile)"
+        if [[ -f DO_NOT_AUTOTEST ]]; then exit 0; fi
+
         mvn compile test
 
         $scriptdir/synth.sh

scripts/build-npm.sh

@@ -22,9 +22,11 @@ verify_star_dependencies() {
 # Find and build all NPM projects
 for pkgJson in $(find typescript -name package.json | grep -v node_modules); do
     (
-        echo "Building project at $(dirname $pkgJson)"
-        cd $(dirname $pkgJson)
+        echo "=============================="
+        echo "building project: $(dirname $pkgJson)"
+        echo "=============================="
 
+        cd $(dirname $pkgJson)
         if [[ -f DO_NOT_AUTOTEST ]]; then exit 0; fi
 
         verify_star_dependencies

scripts/build.sh

@@ -5,3 +5,4 @@ scriptdir=$(cd $(dirname $0) && pwd)
 $scriptdir/build-npm.sh
 $scriptdir/build-java.sh
 $scriptdir/build-python.sh
+$scriptdir/build-csharp.sh