Switch from "docker-compose" to "docker compose" (#448)

Also, set platform linux/amd64 for httpbin. It does not have arm64 image
and starting this container fails on arm64 Macs.

Author: wojtekmach

.github/workflows/main.yml

@@ -72,7 +72,7 @@ jobs:
         run: mix dialyzer --plt
 
       - name: Start docker
-        run: DOCKER_USER="$UID:$GID" docker-compose up --detach
+        run: DOCKER_USER="$UID:$GID" docker compose up --detach
 
       - name: Check for unused dependencies
         run: mix do deps.get, deps.unlock --check-unused

README.md

@@ -131,7 +131,7 @@ mix test --exclude requires_internet_connection
 Run all tests:
 
 ```sh
-DOCKER_USER="$UID:$GID" docker-compose up --detach # or podman-compose up --detach
+DOCKER_USER="$UID:$GID" docker compose up --detach # or podman-compose up --detach
 mix test --include proxy
 ```
 

docker-compose.yml

@@ -13,6 +13,7 @@ services:
 
   httpbin:
     image: docker.io/kennethreitz/httpbin:latest
+    platform: linux/amd64
     ports:
       - "8080:80"
 

test/support/mint/http_bin.ex

@@ -5,7 +5,7 @@ defmodule Mint.HttpBin do
 
   def proxy_host() do
     # the proxy runs in docker so we use the
-    # docker-compose name to connect
+    # docker compose name to connect
     "caddyhttpbin"
   end