Adds support for COPY TO/FROM Azure Blob Storage (#55)

Supports following Azure Blob uri forms:
- `az://{container}/key`
- `azure://{container}/key`
- `https://{account}.blob.core.windows.net/{container}`

**Configuration**

The simplest way to configure object storage is by creating the standard [`~/.azure/config`](https://learn.microsoft.com/en-us/cli/azure/azure-cli-configuration?view=azure-cli-latest) file:

```bash
$ cat ~/.azure/config
[storage]
account = devstoreaccount1
key = Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==
```

Alternatively, you can use the following environment variables when starting postgres to configure the Azure Blob Storage client:
- `AZURE_STORAGE_ACCOUNT`: the storage account name of the Azure Blob
- `AZURE_STORAGE_KEY`: the storage key of the Azure Blob
- `AZURE_CONNECTION_STRING`: the connection string of the Azure Blob
- `AZURE_STORAGE_SAS_TOKEN`: the storage SAS token for the Azure Blob
- `AZURE_TENANT_ID`: the tenant id for client secret auth **(only via environment variables)**
- `AZURE_CLIENT_ID`: the client id for client secret auth **(only via environment variables)**
- `AZURE_CLIENT_SECRET`: the client secret for client secret auth **(only via environment variables)**
- `AZURE_STORAGE_ENDPOINT`: the endpoint **(only via environment variables)**
- `AZURE_ALLOW_HTTP`: allows http endpoints **(only via environment variables)**
- `AZURE_CONFIG_FILE`: an alternative location for the config file **(only via environment variables)**

**Bonus**
Additionally, PR adds support to the following S3 uri forms:
- `https://s3.amazonaws.com/{bucket}/key`
- `https://{bucket}.s3.amazonaws.com/key`

Closes #50

.devcontainer/.env

@@ -8,5 +8,15 @@ AWS_S3_TEST_BUCKET=testbucket
 MINIO_ROOT_USER=minioadmin
 MINIO_ROOT_PASSWORD=minioadmin
 
+# Azure Blob tests
+AZURE_STORAGE_ACCOUNT=devstoreaccount1
+AZURE_STORAGE_KEY="Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw=="
+AZURE_STORAGE_CONNECTION_STRING="DefaultEndpointsProtocol=http;AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;BlobEndpoint=http://localhost:10000/devstoreaccount1;"
+AZURE_STORAGE_ENDPOINT=http://localhost:10000/devstoreaccount1
+AZURE_ALLOW_HTTP=true
+AZURE_TEST_CONTAINER_NAME=testcontainer
+AZURE_TEST_READ_ONLY_SAS="se=2100-05-05&sp=r&sv=2022-11-02&sr=c&sig=YMPFnAHKe9y0o3hFegncbwQTXtAyvsJEgPB2Ne1b9CQ%3D"
+AZURE_TEST_READ_WRITE_SAS="se=2100-05-05&sp=rcw&sv=2022-11-02&sr=c&sig=TPz2jEz0t9L651t6rTCQr%2BOjmJHkM76tnCGdcyttnlA%3D"
+
 # Others
 RUST_TEST_THREADS=1

.devcontainer/Dockerfile

@@ -12,6 +12,11 @@ RUN apt-get update && apt-get -y install build-essential libreadline-dev zlib1g-
                                          curl lsb-release ca-certificates gnupg sudo git \
                                          nano net-tools awscli
 
+# install azure-cli
+RUN curl -sL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | tee /etc/apt/keyrings/microsoft.gpg > /dev/null
+RUN echo "deb [arch=`dpkg --print-architecture` signed-by=/etc/apt/keyrings/microsoft.gpg] https://packages.microsoft.com/repos/azure-cli/ `lsb_release -cs` main" | tee /etc/apt/sources.list.d/azure-cli.list
+RUN apt-get update && apt-get install -y azure-cli
+
 # install Postgres
 RUN sh -c 'echo "deb https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
 RUN wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -

.devcontainer/docker-compose.yml

@@ -3,20 +3,23 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
-    command: sleep infinity
+    entrypoint: "./entrypoint.sh"
     network_mode: host
     volumes:
       - ..:/workspace
       - ${USERPROFILE}${HOME}/.ssh:/home/rust/.ssh:ro
       - ${USERPROFILE}${HOME}/.ssh/known_hosts:/home/rust/.ssh/known_hosts:rw
       - ${USERPROFILE}${HOME}/.gitconfig:/home/rust/.gitconfig:ro
-      - ${USERPROFILE}${HOME}/.aws:/home/rust/.aws:ro
+      - ${USERPROFILE}${HOME}/.aws:/home/rust/.aws:rw
+      - ${USERPROFILE}${HOME}/.azure:/home/rust/.azure:rw
+      - ./entrypoint.sh:/entrypoint.sh
     env_file:
       - .env
     cap_add:
       - SYS_PTRACE
     depends_on:
       - minio
+      - azurite
 
   minio:
     image: minio/minio
@@ -31,4 +34,16 @@ services:
       timeout: 2s
       retries: 3
     volumes:
-      - ./minio-entrypoint.sh:/entrypoint.sh
+        - ./minio-entrypoint.sh:/entrypoint.sh
+
+  azurite:
+    image: mcr.microsoft.com/azure-storage/azurite
+    env_file:
+      - .env
+    network_mode: host
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "nc", "-z", "localhost", "10000"]
+      interval: 6s
+      timeout: 2s
+      retries: 3

.devcontainer/entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+trap "echo 'Caught termination signal. Exiting...'; exit 0" SIGINT SIGTERM
+
+# create azurite container
+az storage container create -n $AZURE_TEST_CONTAINER_NAME --connection-string $AZURE_STORAGE_CONNECTION_STRING
+
+sleep infinity

.github/workflows/ci.yml

@@ -85,6 +85,11 @@ jobs:
                                   postgresql-client-${{ env.PG_MAJOR }} \
                                   libpq-dev
 
+      - name: Install azure-cli
+        run: |
+          curl -sL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | sudo tee /etc/apt/keyrings/microsoft.gpg > /dev/null
+          echo "deb [arch=`dpkg --print-architecture` signed-by=/etc/apt/keyrings/microsoft.gpg] https://packages.microsoft.com/repos/azure-cli/ `lsb_release -cs` main" | sudo tee /etc/apt/sources.list.d/azure-cli.list
+          sudo apt-get update && sudo apt-get install -y azure-cli
 
       - name: Install and configure pgrx
         run: |
@@ -112,14 +117,28 @@ jobs:
             -p 9000:9000 \
             --entrypoint "./entrypoint.sh" \
             --volume ./.devcontainer/minio-entrypoint.sh:/entrypoint.sh \
-            --name miniocontainer \
             minio/minio
 
           while ! curl $AWS_ENDPOINT_URL; do
             echo "Waiting for $AWS_ENDPOINT_URL..."
             sleep 1
           done
 
+      - name: Start Azurite for Azure Blob Storage emulator tests
+        run: |
+          docker run -d \
+            --env-file .devcontainer/.env \
+            -p 10000:10000 \
+            mcr.microsoft.com/azure-storage/azurite
+
+          while ! curl $AZURE_STORAGE_ENDPOINT; do
+            echo "Waiting for $AZURE_STORAGE_ENDPOINT..."
+            sleep 1
+          done
+
+          # create container
+          az storage container create -n $AZURE_TEST_CONTAINER_NAME --connection-string $AZURE_STORAGE_CONNECTION_STRING
+
       - name: Run tests
         run: |
           # Run tests with coverage tool