Update build and run scripts to support Apple's container.

.gitignore

@@ -8,7 +8,12 @@
 
 # Python
 **/.venv
+**/.env
+**/playground.py
 
 # Azure Secrets and Configuration.
 /.acr-pat
 /azure.env
+
+# MacOS Finder files
+**/.DS_Store

README.md

@@ -1,16 +1,46 @@
-## Azure Image Chooser
+# Azure Image Chooser
 
 Azure Image Chooser is a [Streamlit](https://streamlit.io) application that allows users to select Azure VM images from the Azure Marketplace.
 
-It is in its preliminary version and is subject to development and change. It is provided here for you convenience and may not include all features or functionality of the final product.
+Azure Image Chooser is written in Python and requires Python interpreter. At the time of writing this, Python 3.13 is the latest.
 
-Azure Image Chooser is written in Python and requires Python interpreter. At the time of writing this, Python 3.13 is the latest. Execute the following commands to run the app:
+You can run it on your local machine or deploy to any platform that runs containers. A Docker file and Terraform code to deploy to the Azure are provided.
+
+## Running on a local machine
+
+Create a Python development environment file `.env`:
+
+```shell
+AZURE_SUBSCRIPTION_ID="subscription_id"
+AZURE_CLIENT_ID="client_id"
+AZURE_CLIENT_SECRET="client_secret"
+AZURE_TENANT_ID="tenant_id"
+AZURE_LOCATION="westeurope"
+```
+
+> NOTE: Replace the placeholder values with your actual values. Omit `AZURE_CLIENT_ID`, `AZURE_CLIENT_SECRET`, and `AZURE_TENANT_ID` if you are using Azure CLI authentication.
+
+Execute the following commands to run the app:
 
 ```shell
 python3 -m venv .venv
-.venv/bin/python -m pip install pip --upgrade
-.venv/bin/pip install streamlit azure-identity azure-mgmt-compute
-.venv/bin/streamlit run image-chooser.py
+source .venv/bin/activate
+python -m pip install pip --upgrade
+pip install -r requirements.txt
+cd app
+streamlit run image-chooser.py
 ```
 
-You have to be authenticated in Azure CLI. The app will block terminal and start a web server. Follow the instructions in the terminal to access the app.
+The app will block terminal and start a web server. Follow the instructions in the terminal to access the app.
+
+## Add Certificate Binding for Azure Deployment
+
+Unfortunately, as of now, the Terraform Azure Resource Manager Provider does not support binding certificates to container apps. You can still bind the certificate using the Azure CLI.
+
+```shell
+# Find the certificate name
+CERTIFICATE_LOWERCASE_NAME=$(az containerapp env certificate list -g $RESOURCE_GROUP -n $ENVIRONMENT --query '[].name' -o tsv)
+
+# Bind the certificate to the container app
+az containerapp hostname bind --hostname $DOMAIN_NAME -g $RESOURCE_GROUP -n $CONTAINER_APP --environment $ENVIRONMENT --certificate $CERTIFICATE_LOWERCASE_NAME --validation-method CNAME
+```

app/Dockerfile

@@ -7,6 +7,8 @@ COPY requirements.txt .
 RUN pip install --root-user-action=ignore --no-cache-dir -r requirements.txt
 
 COPY image-chooser.py .
+COPY templates/ templates/
+COPY templates.json .
 COPY ./entrypoint.sh /
 
 ENTRYPOINT [ "/entrypoint.sh" ]

app/image-chooser.py

@@ -2,19 +2,49 @@ import streamlit as st
 import pandas as pd
 import re
 from azure.identity import DefaultAzureCredential
+from azure.mgmt.resource import SubscriptionClient
 from azure.mgmt.compute import ComputeManagementClient
+from jinja2 import Template, Environment, FileSystemLoader
+import json
+from os import getenv
+from dotenv import load_dotenv
+
+load_dotenv()
+
+def is_valid(key_name: str):
+    return key_name in st.session_state and st.session_state[key_name] is not None and len(st.session_state[key_name]) > 0
+
+def is_valid_and_not_equal(key_name: str, value: str):
+    return key_name in st.session_state and st.session_state[key_name] != value
 
 def clear_offers():
     if 'offers' in st.session_state: del st.session_state.offers
     if 'selected_offer' in st.session_state: del st.session_state.selected_offer
     clear_skus()
 
-def clear_selected_sku():
-    if 'selected_sku' in st.session_state: del st.session_state.selected_sku
-
 def clear_skus():
     if 'skus' in st.session_state: del st.session_state.skus
-    clear_selected_sku()
+    if 'selected_sku' in st.session_state: del st.session_state.selected_sku
+    clear_image_versions()
+
+def clear_image_versions():
+    if 'image_versions' in st.session_state: del st.session_state.image_versions
+    if 'selected_image_version' in st.session_state: del st.session_state.selected_image_version
+
+def on_publisher_changed():
+    clear_offers()
+
+def on_offer_changed():
+    clear_skus()
+
+def on_sku_changed():
+    clear_skus()
+
+def on_image_version_changed():
+    clear_image_versions()
+
+def version_key(v):
+    return [int(x) for x in v.split('.')]
 
 @st.cache_data
 def get_publishers(location: str):
@@ -32,57 +62,118 @@ def get_skus(location: str, publisher: str, offer: str):
 def get_image_versions(location: str, publisher: str, offer: str, sku: str):
     return [version.name for version in compute_client.virtual_machine_images.list(location, publisher, offer, sku)]
 
-subscription_id = "c885a276-c882-483f-b216-42f73715161d"
-location = "westeurope"
+@st.cache_data
+def get_locations():
+    subscription_client = SubscriptionClient(credential)
+    locations = sorted(subscription_client.subscriptions.list_locations(getenv('AZURE_SUBSCRIPTION_ID')), key=lambda l: l.name)
+    return [
+            loc for loc in locations
+            if loc.metadata.region_type == 'Physical'
+        ]
+
+def usage_scenario_label(item):
+    return item['label']
+
+subscription_id = getenv("AZURE_SUBSCRIPTION_ID")
+default_location = getenv("AZURE_LOCATION", "westeurope")
 
 credential = DefaultAzureCredential()
+
+locations = get_locations()
+
 compute_client = ComputeManagementClient(credential, subscription_id)
 
 st.set_page_config(page_title='Azure Image Chooser', layout='wide')
 
 st.title('Azure Image Chooser')
 
-left_col, middle_col, right_col = st.columns(3)
+location_cols = st.columns(4)
 
+location = location_cols[0].selectbox('Select Azure Location',
+                        options=[{"name": loc.name, "display_name": loc.display_name} for loc in locations],
+                        index=locations.index(next((l for l in locations if l.name == default_location), default_location)),
+                        format_func=lambda loc: loc['display_name']
+                        )['name']
+
+publisher_col, offer_col, sku_col, version_col = st.columns(4)
+
+# Publishers
 if 'publishers' not in st.session_state:
     st.session_state.publishers = get_publishers(location)
     clear_offers()
 
-selected_publisher = left_col.selectbox('Select Publisher', options=st.session_state.publishers)
+if is_valid('publishers'):
+    st.session_state.selected_publisher = publisher_col.selectbox('Select Publisher', options=st.session_state.publishers, on_change=on_publisher_changed, index=None)
+else:
+    st.error("No publishers found. Please check your Azure subscription and location.")
+    # st.stop()
 
-if 'selected_publisher' not in st.session_state or selected_publisher != st.session_state.selected_publisher:
-    st.session_state.selected_publisher = selected_publisher
-    clear_offers()
-
-if 'offers' not in st.session_state:
+# Offers
+if 'offers' not in st.session_state and is_valid('selected_publisher'):
     st.session_state.offers = get_offers(location, st.session_state.selected_publisher)
-    clear_skus()
 
-selected_offer = middle_col.selectbox('Select Offer', options=st.session_state.offers)
+if is_valid('offers'):
+    st.session_state.selected_offer = offer_col.selectbox('Select Offer', options=st.session_state.offers, on_change=on_offer_changed, index=None)
+elif is_valid('selected_publisher'):
+    st.info("No offers found for the selected publisher. Please select a different publisher.")
+#     st.stop()
+# else:
+#     st.stop()
 
-if 'selected_offer' not in st.session_state or selected_offer != st.session_state.selected_offer:
-    st.session_state.selected_offer = selected_offer
-    clear_skus()
-
-if 'skus' not in st.session_state:
+# SKUs
+if 'skus' not in st.session_state and is_valid('selected_publisher') and is_valid('selected_offer'):
     st.session_state.skus = get_skus(location, st.session_state.selected_publisher, st.session_state.selected_offer)
-    clear_selected_sku()
 
-selected_sku = right_col.selectbox('Select SKU', options=st.session_state.skus)
+if is_valid('skus'):
+    st.session_state.selected_sku = sku_col.selectbox('Select SKU', options=st.session_state.skus, on_change=on_sku_changed, index=None)
+elif is_valid('selected_offer'):
+    st.info("No SKUs found for the selected offer. Please select a different offer.")
+#     st.stop()
+# else:
+#     st.stop()
 
-if 'selected_sku' not in st.session_state or selected_sku != st.session_state.selected_sku:
-    st.session_state.selected_sku = selected_sku
+# Image versions
+if 'image_versions' not in st.session_state and is_valid('selected_publisher') and is_valid('selected_offer') and is_valid('selected_sku'):
+    image_versions = get_image_versions(location, st.session_state.selected_publisher, st.session_state.selected_offer, st.session_state.selected_sku)
+    # Check if all image version string match the re.
+    regex = re.compile(r'^[0-9]+\.[0-9]+\.[0-9]+$')
 
-def version_key(v):
-    return [int(x) for x in v.split('.')]
+    if all(regex.match(version) for version in image_versions):
+        image_versions = sorted(image_versions, key=version_key)
 
-regex = re.compile(r'^[0-9]+\.[0-9]+\.[0-9]+$')
+    st.session_state.image_versions = image_versions
 
-# Display available image versions
-images_versions = get_image_versions(location, st.session_state.selected_publisher, st.session_state.selected_offer, st.session_state.selected_sku)
+if is_valid('image_versions'):
+    st.session_state.selected_image_version = version_col.selectbox('Select Image Version', options=st.session_state.image_versions, index=None)
+elif is_valid('selected_sku'):
+    st.info("No image versions found for the selected SKU. Please select a different SKU.")
+#     st.stop()
+# else:
+#     st.stop()
 
-# Check if all image version string match the re.
-if all(regex.match(version) for version in images_versions):
-    images_versions = sorted(images_versions, key=version_key)
+if is_valid('selected_image_version'):
+    st.subheader("Usage example")
 
-st.dataframe(images_versions, hide_index=True, column_config={"value": "Image Version"})
+    with open("templates.json") as f:
+        templates = json.load(f)
+
+    layout = st.columns(4)
+
+    selected_file = layout[0].selectbox('Select usage scenario:', options=templates, format_func=usage_scenario_label)
+
+    env = Environment(loader=FileSystemLoader("templates"))
+    tpl = env.get_template(selected_file['file'])
+    rendered = tpl.render(
+        publisher=st.session_state.selected_publisher,
+        offer=st.session_state.selected_offer,
+        sku=st.session_state.selected_sku,
+        version=st.session_state.selected_image_version
+    )
+
+    st.code(rendered, language=selected_file['language'])
+
+if is_valid('selected_publisher') and is_valid('selected_offer') and is_valid('skus'):
+    sku_list = '[\n' + ',\n'.join(f'\t"{sku}"' for sku in st.session_state['skus']) +'\n]'
+    st.subheader('Available SKUs')
+    st.markdown('The below HCL code is suitable to be used as SKU validation set.')
+    st.code(sku_list)

app/requirements.txt

@@ -1,3 +1,5 @@
 streamlit
 azure-identity
+azure.mgmt.resource
 azure-mgmt-compute
+python-dotenv

app/templates.json

@@ -0,0 +1,17 @@
+[
+    {
+        "label": "Terraform VM image reference",
+        "language": "hcl",
+        "file": "azurerm_hcl.tpl"
+    },
+    {
+        "label": "Azure CLI",
+        "language": "shell",
+        "file": "shell.tpl"
+    },
+    {
+        "label": "Azure Resource Manager Template",
+        "language": "json",
+        "file": "arm_vm.jsonc"
+    }
+]

app/templates/arm_vm.jsonc

@@ -0,0 +1,17 @@
+{
+    // This is a partial Azure virtual machine resource template.
+    "type": "Microsoft.Compute/virtualMachines",
+    "apiVersion": "2022-03-01",
+    "name": "example-vm",
+    "location": "westeurope",
+    "properties": {
+        "storageProfile": {
+            "imageReference": {
+                "publisher": "{{ publisher }}",
+                "offer": "{{ offer }}",
+                "sku": "{{ sku }}",
+                "version": "{{ version }}"
+            }
+        }
+    }
+}

app/templates/azurerm_hcl.tpl

@@ -0,0 +1,6 @@
+source_image_reference = {
+    publisher = "{{ publisher }}"
+    offer     = "{{ offer }}"
+    sku       = "{{ sku }}"
+    version   = "{{ version }}"
+}

app/templates/shell.tpl

@@ -0,0 +1 @@
+az create -n MyVM -g MyResourceGroup --image {{ publisher }}:{{ offer }}:{{ sku }}:{{ version }}

build.sh

@@ -1,17 +1,14 @@
-#!/bin/bash
+#!//usr/bin/env bash
 
 IMAGE_NAME="azure-image-chooser"
-#IMAGE="docker.io/skoszewski/$IMAGE_NAME"
-IMAGE="skdomlab.azurecr.io/$IMAGE_NAME"
+IMAGE="docker.io/skoszewski/$IMAGE_NAME:latest"
+# IMAGE="skdomlab.azurecr.io/$IMAGE_NAME"
 
-if [ "$(basename $(command -v docker))" = "docker" ]; then
-    CMD="docker"
-elif [ "$(basename $(command -v podman))" = "podman" ]; then
-    CMD="podman"
+if command -v docker > /dev/null; then
+    docker buildx build -t $IMAGE app
+elif command -v container > /dev/null; then
+    container build -t $IMAGE app
 else
     echo "No suitable container tool found"
     exit 1
-fi
-
-$CMD build -t $IMAGE app
-$CMD push $IMAGE
+fi

run-container.sh

@@ -1,24 +1,37 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-if [ -z "$AZURE_CLIENT_ID" ] || [ -z "$AZURE_TENANT_ID" ] || [ -z "$AZURE_CLIENT_SECRET" ] || [ -z "$AZURE_SUBSCRIPTION_ID" ]; then
-    echo "One or more environment variables are not set."
-    exit 1
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+if [ -f "$SCRIPT_DIR/azure.env" ]; then
+    source "$SCRIPT_DIR/azure.env"
 fi
 
-if [ "$(basename $(command -v docker))" = "docker" ]; then
+REQUIRED_VARS=("AZURE_CLIENT_ID" "AZURE_TENANT_ID" "AZURE_CLIENT_SECRET" "AZURE_SUBSCRIPTION_ID")
+for VAR in "${REQUIRED_VARS[@]}"; do
+    if [ -z "${!VAR}" ]; then
+        echo "Environment variable $VAR is not set."
+        exit 1
+    fi
+done
+
+IMAGE_NAME="azure-image-chooser"
+IMAGE="docker.io/skoszewski/$IMAGE_NAME:latest"
+
+RUN_ARGS=(
+    "--env" "AZURE_CLIENT_ID=$AZURE_CLIENT_ID"
+    "--env" "AZURE_TENANT_ID=$AZURE_TENANT_ID"
+    "--env" "AZURE_CLIENT_SECRET=$AZURE_CLIENT_SECRET"
+    "--env" "AZURE_SUBSCRIPTION_ID=$AZURE_SUBSCRIPTION_ID"
+    "-p" "8501:8501"
+)
+
+if command -v docker > /dev/null; then
     CMD="docker"
-elif [ "$(basename $(command -v podman))" = "podman" ]; then
-    CMD="podman"
+elif command -v container > /dev/null; then
+    CMD="container"
 else
     echo "No suitable container tool found"
     exit 1
 fi
 
-$CMD run --rm \
-    -it \
-    -e AZURE_CLIENT_ID="$AZURE_CLIENT_ID" \
-    -e AZURE_TENANT_ID="$AZURE_TENANT_ID" \
-    -e AZURE_CLIENT_SECRET="$AZURE_CLIENT_SECRET" \
-    -e AZURE_SUBSCRIPTION_ID="$AZURE_SUBSCRIPTION_ID" \
-    -p 8501:8501 \
-    azure-image-chooser
+$CMD run --rm -it "${RUN_ARGS[@]}" $IMAGE

terraform/main.tf

@@ -30,6 +30,7 @@ data "azuread_user" "az_lab_admin" {
 
 locals {
   kv_secret_name = "azure-client-secret"
+  app_name       = "${var.project_name}-app"
 }
 
 resource "azurerm_resource_group" "rg" {
@@ -51,7 +52,6 @@ resource "azurerm_key_vault" "kv" {
   resource_group_name       = azurerm_resource_group.rg.name
   sku_name                  = "standard"
   tenant_id                 = data.azurerm_client_config.current.tenant_id
-  enable_rbac_authorization = true
 }
 
 resource "azurerm_role_assignment" "app_assignment" {
@@ -82,7 +82,7 @@ resource "azurerm_container_app_environment" "env" {
 }
 
 resource "azurerm_container_app" "app" {
-  name                         = "${var.project_name}-app"
+  name                         = local.app_name
   container_app_environment_id = azurerm_container_app_environment.env.id
   resource_group_name          = azurerm_resource_group.rg.name
   revision_mode                = "Single"
@@ -119,6 +119,11 @@ resource "azurerm_container_app" "app" {
         name  = "AZURE_SUBSCRIPTION_ID"
         value = var.subscription_id
       }
+
+      env {
+        name  = "AZURE_LOCATION"
+        value = azurerm_resource_group.rg.location
+      }
     }
   }
 
@@ -165,3 +170,37 @@ data "azurerm_container_registry" "acr" {
   name                = "skdomlab"
   resource_group_name = "dom-lab-common"
 }
+
+data "azurerm_dns_zone" "lab_dns_zone" {
+  name                = var.dns_zone_name
+  resource_group_name = var.dns_zone_resource_group_name
+}
+
+resource "azurerm_dns_txt_record" "domain_verification" {
+  name                = "asuid.${var.project_name}"
+  resource_group_name = data.azurerm_dns_zone.lab_dns_zone.resource_group_name
+  zone_name           = data.azurerm_dns_zone.lab_dns_zone.name
+  ttl                 = 300
+
+  record {
+    value = azurerm_container_app.app.custom_domain_verification_id
+  }
+}
+
+resource "azurerm_dns_cname_record" "app_record" {
+  name                = var.project_name
+  zone_name           = var.dns_zone_name
+  resource_group_name = var.dns_zone_resource_group_name
+  ttl                 = 300
+
+  record = "${local.app_name}.${azurerm_container_app_environment.env.default_domain}"
+}
+
+resource "azurerm_container_app_custom_domain" "custom_domain" {
+  name             = trimsuffix(trimprefix(azurerm_dns_txt_record.domain_verification.fqdn, "asuid."), ".")
+  container_app_id = azurerm_container_app.app.id
+
+  lifecycle {
+    ignore_changes = [certificate_binding_type, container_app_environment_certificate_id]
+  }
+}

terraform/variables.tf

@@ -25,3 +25,15 @@ variable "project_name" {
   description = "The name used to construct Azure resource names."
   type        = string
 }
+
+variable "dns_zone_name" {
+  description = "The name of the DNS zone for domain verification."
+  type        = string
+  default     = "lab.koszewscy.waw.pl"
+}
+
+variable "dns_zone_resource_group_name" {
+  description = "The name of the resource group containing the DNS zone."
+  type        = string
+  default     = "dom-lab-zones"
+}