Merge pull request #113 from robmarkcole/use-docker

Use docker

.devcontainer/Dockerfile

@@ -0,0 +1,19 @@
+
+FROM python:3.7
+
+COPY requirements.txt requirements_test.txt /tmp/pip-tmp/
+
+# Configure apt and install packages
+RUN apt-get update \
+    && apt-get -y install --no-install-recommends apt-utils dialog 2>&1 \
+    #
+    # Verify git, process tools, lsb-release (common in install instructions for CLIs) installed
+    && apt-get -y install git iproute2 procps lsb-release \
+    #
+    # Install pylint
+    && pip --disable-pip-version-check --no-cache-dir install pylint \
+    #
+    # Update Python environment based on requirements.txt
+    && pip --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+    && pip --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements_test.txt \
+    && rm -rf /tmp/pip-tmp \

.devcontainer/devcontainer.json

@@ -0,0 +1,33 @@
+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or the definition README at
+// https://github.com/microsoft/vscode-dev-containers/tree/master/containers/python-3
+{
+	"name": "Python 3",
+	"context": "..",
+	"dockerFile": "Dockerfile",
+	// Use 'settings' to set *default* container specific settings.json values on container create.
+	// You can edit these settings after create using File > Preferences > Settings > Remote.
+	"settings": {
+		"terminal.integrated.shell.linux": "/bin/bash",
+		"python.pythonPath": "/usr/local/bin/python",
+		"python.linting.enabled": true,
+		"python.linting.pylintEnabled": true,
+		"python.formatting.provider": "black",
+		"editor.formatOnPaste": false,
+		"editor.formatOnSave": true,
+		"editor.formatOnType": true,
+		"files.trimTrailingWhitespace": true
+	},
+	// Use 'appPort' to create a container with published ports. If the port isn't working, be sure
+	// your server accepts connections from all interfaces (0.0.0.0 or '*'), not just localhost.
+	// "appPort": [],
+	// Uncomment the next line to run commands after the container is created.
+	"postCreateCommand": "pip install -r requirements.txt && pip3 install -e .",
+	// Uncomment the next line to have VS Code connect as an existing non-root user in the container.
+	// On Linux, by default, the container user's UID/GID will be updated to match your local user. See
+	// https://aka.ms/vscode-remote/containers/non-root for details on adding a non-root user if none exist.
+	// "remoteUser": "vscode",
+	// Add the IDs of extensions you want installed when the container is created in the array below.
+	"extensions": [
+		"ms-python.python"
+	]
+}

.travis.yml

@@ -2,11 +2,12 @@ language: python
 # sudo false implies containerized builds
 #sudo: false
 python:
- - "3.6"
+ - "3.7"
 before_install:
     - pip install pytest pytest-cov
     - pip install coveralls
 install:
+    - pip install -r requirements.txt
     - pip install -r requirements_test.txt
 # command to run tests
 script: