[Feature] Add support for tc.host using javaproperties

Gemfile.lock

@@ -15,6 +15,7 @@ PATH
   specs:
     testcontainers-core (0.2.0)
       docker-api (~> 2.2)
+      java-properties (~> 0.3.0)
 
 PATH
   remote: elasticsearch
@@ -104,6 +105,7 @@ GEM
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
     ffi (1.15.5)
+    java-properties (0.3.0)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     lint_roller (1.0.0)

core/Gemfile.lock

@@ -3,29 +3,29 @@ PATH
   specs:
     testcontainers-core (0.2.0)
       docker-api (~> 2.2)
-      properties-ruby (~> 0.0.4)
+      java-properties (~> 0.3.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
+    coderay (1.1.3)
     docker-api (2.2.0)
       excon (>= 0.47.0)
       multi_json
     excon (0.99.0)
+    java-properties (0.3.0)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     lint_roller (1.0.0)
-    logeasy (0.0.8)
+    method_source (1.1.0)
     minitest (5.18.0)
     minitest-hooks (1.5.0)
       minitest (> 5.3)
     multi_json (1.15.0)
     parallel (1.23.0)
     parser (3.2.2.1)
       ast (~> 2.4.1)
-    properties-ruby (0.0.4)
-      logeasy (>= 0.0.4)
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.8.0)

core/lib/testcontainers/docker_container.rb

@@ -1,4 +1,5 @@
-require 'properties-ruby'
+require 'java-properties'
+
 module Testcontainers
   # The DockerContainer class is used to manage Docker containers.
   # It provides an interface to create, start, stop, and manipulate containers
@@ -473,8 +474,9 @@ def use
     # @raise [ConnectionError] If the connection to the Docker daemon fails.
     # @raise [NotFoundError] If Docker is unable to find the image.
     def start
-      properties = Utils::Properties.load_from_file(File.expand_path('~/.testcontainers.properties'))
-      tc_host = properties.get(:"tc.host")
+      properties = JavaProperties.load(File.expand_path('~/.testcontainers.properties'))
+
+      tc_host = ENV["TESTCONTAINERS_HOST"] || properties[:"tc.host"]
 
       if tc_host && !tc_host.empty?
         Docker.url = tc_host

core/testcontainers-core.gemspec

@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
 
   # Uncomment to register a new dependency of your gem
   spec.add_dependency "docker-api", "~> 2.2"
-  spec.add_dependency "properties-ruby", "~> 0.0.4"
+  spec.add_dependency "java-properties", "~> 0.3.0"
 
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "minitest", "~> 5.0"