fix pytest-cov settings

poetry.lock

@@ -147,6 +147,9 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
+[package.dependencies]
+toml = {version = "*", optional = true, markers = "extra == \"toml\""}
+
 [package.extras]
 toml = ["toml"]
 
@@ -1038,7 +1041,7 @@ testing = ["pathlib2", "unittest2", "jaraco.itertools", "func-timeout"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.5.0"
-content-hash = "c09941e9c32eaecfb196339e27b460c570595da063cad6822db3e25c2cfd0a13"
+content-hash = "83b7d966995211d9128c6fb75d4b6dfc03b765347e584b5818dbd181a9f1e322"
 
 [metadata.files]
 anyconfig = [

pyproject.toml

@@ -62,6 +62,7 @@ zipp = "<2.0.0"
 [tool.poetry.dev-dependencies]
 autopep8 = "*"
 bandit = "*"
+coverage = {extras = ["toml"], version = "*"}
 flake8 = "*"
 flake8-blind-except = "*"
 flake8-builtins = "*"
@@ -98,7 +99,8 @@ line_length = 99
 sections = ["FUTURE", "STDLIB", "THIRDPARTY", "FIRSTPARTY", "LOCALFOLDER"]
 skip_glob = ["**/.env*", "**/env/*", "**/docs/*"]
 
-[tool.pytest]
+[tool.pytest.ini_options]
+addopts = "--cov=dockertidy --cov-report xml:coverage.xml --cov-append --no-cov-on-fail"
 filterwarnings = [
   "ignore::FutureWarning",
   "ignore:.*collections.*:DeprecationWarning",