Optionally install Azure Bicep as part of azure-cli feature (#305)

* Adding azure-cli bicep installer to correctly install on arm64 containers

* Adding a few updates following @joshspicer's review.

src/azure-cli/devcontainer-feature.json

 {
   "id": "azure-cli",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "name": "Azure CLI",
   "documentationURL": "https://github.com/devcontainers/features/tree/main/src/azure-cli",
   "description": "Installs the Azure CLI along with needed dependencies. Useful for base Dockerfiles that often are missing required install dependencies like gpg.",
@@ -17,6 +17,11 @@
       "type": "string",
       "default": "",
       "description": "Optional comma separated list of Azure CLI extensions to install in profile."
+    },
+    "installBicep": {
+      "type": "boolean",
+      "description": "Optionally install Azure Bicep",
+      "default": false
     }
   },
   "customizations": {

src/azure-cli/install.sh

@@ -14,6 +14,7 @@ rm -rf /var/lib/apt/lists/*
 
 AZ_VERSION=${VERSION:-"latest"}
 AZ_EXTENSIONS=${EXTENSIONS}
+AZ_INSTALLBICEP=${INSTALLBICEP:-false}
 
 MICROSOFT_GPG_KEYS_URI="https://packages.microsoft.com/keys/microsoft.asc"
 AZCLI_ARCHIVE_ARCHITECTURES="amd64"
@@ -197,6 +198,30 @@ if [ ${#AZ_EXTENSIONS[@]} -gt 0 ]; then
     done
 fi
 
+if [ "${AZ_INSTALLBICEP}" = "true" ]; then
+    # Install dependencies
+    check_packages apt-transport-https curl 
+    
+    # Properly install Azure Bicep based on current architecture
+    # The `az bicep install` command installs the linux-x64 binary even on arm64 devcontainers
+    # The `az bicep install --target-platform` could be a solution; however, linux-arm64 is not an allowed value for this argument yet
+    # Manually installing Bicep and moving to the appropriate directory where az expects it to be
+    
+    if [ "${architecture}" = "arm64" ]; then
+        curl -Lo bicep https://github.com/Azure/bicep/releases/latest/download/bicep-linux-arm64
+    else 
+        curl -Lo bicep https://github.com/Azure/bicep/releases/latest/download/bicep-linux-x64
+    fi
+    
+    chmod +x ./bicep
+    mv ./bicep /usr/local/bin/bicep
+
+    # Add a symlink so bicep can be accessed as a standalone executable or as part of az
+    mkdir -p ${_REMOTE_USER_HOME}/.azure/bin
+    chown -hR ${_REMOTE_USER}:${_REMOTE_USER} ${_REMOTE_USER_HOME}/.azure
+    ln -s /usr/local/bin/bicep ${_REMOTE_USER_HOME}/.azure/bin/bicep
+fi
+
 # Clean up
 rm -rf /var/lib/apt/lists/*
 

test/azure-cli/install_bicep.sh

+#!/bin/bash
+
+set -e
+
+# Import test library for `check` command
+source dev-container-features-test-lib
+
+# Check to make sure the user is vscode
+check "user is vscode" whoami | grep vscode
+
+# Bicep-specific tests
+check "bicep" bicep --version
+check "az bicep" az bicep version
+
+# Report result
+reportResults
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test/azure-cli/scenarios.json

 {
   "install_extensions": {
-    "image": "ubuntu:focal",
+    "image": "mcr.microsoft.com/devcontainers/base:jammy",
     "user": "vscode",
     "features": {
       "azure-cli": {
@@ -8,5 +8,15 @@
         "extensions": "aks-preview,amg,containerapp"
       }
     }
+  },
+  "install_bicep": {
+    "image": "mcr.microsoft.com/devcontainers/base:jammy",
+    "user": "vscode",
+    "features": {
+      "azure-cli": {
+        "version": "latest",
+        "installBicep": true
+      }
+    }
   }
 }
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