diff --git a/.coveralls.yml b/.coveralls.yml
index 3b85ca4f..7b4af8dc 100644
--- a/.coveralls.yml
+++ b/.coveralls.yml
@@ -1,3 +1,2 @@
-service_name: travis-ci
-coverage_clover: build/logs/clover.xml
-json_path: build/logs/coveralls-upload.json
+coverage_clover: tests/coverage/clover.xml
+json_path: tests/coverage/coveralls-upload.json
diff --git a/.github/workflows/lint-tests.yml b/.github/workflows/lint-tests.yml
new file mode 100644
index 00000000..4c3697e8
--- /dev/null
+++ b/.github/workflows/lint-tests.yml
@@ -0,0 +1,162 @@
+name: Coding Standards and Tests
+
+on:
+  push:
+    branches:
+      - master
+      - develop
+  pull_request:
+
+jobs:
+  lint:
+    name: "Coding Standards"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "14"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run coding standards check
+        run: npm run lint
+
+  test-e2e:
+    needs: [lint]
+    name: "E2E tests (PHP 7.4, WordPress latest, with code coverage)"
+    runs-on: ubuntu-latest
+
+    env:
+      NODE_ENV: e2e
+      WP_VERSION: 5.7
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: hmarr/debug-action@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "14"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build assets
+        run: npm run build:js
+
+      - name: Start docker local env
+        run: npm run env:start
+
+      - name: Install WordPress
+        run: |
+          npm run wp -- wp core install --title=WordPress --admin_user=admin --admin_password=password --admin_email=admin@example.com --skip-email --url=http://localhost:8088 --quiet
+          npm run wp -- wp plugin activate foo-bar
+
+      - name: Run E2E tests with coverage
+        run: npm run test:e2e:coverage
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./tests/coverage/e2e/lcov.info
+          flag-name: "E2E Tests"
+          parallel: true
+
+  test-js:
+    needs: [lint]
+    name: "JS unit tests (with code coverage)"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "14"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run JS tests
+        run: npm run test:js:coverage
+
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./tests/coverage/js/lcov.info
+          flag-name: "JS Unit Tests"
+          parallel: true
+
+  test-php:
+    needs: [lint]
+    name: "PHP tests (PHP ${{ matrix.php_versions }}, WordPress ${{ matrix.wp_versions }})"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        php_versions: [7.4, 7.3, 7.2, 7.1]
+        wp_versions: ["latest"]
+        os: [ubuntu-latest]
+        include:
+          - php_versions: 7.4
+            wp_versions: "trunk"
+            os: ubuntu-latest
+
+          - php_versions: "7.0"
+            wp_versions: "latest"
+            os: ubuntu-18.04 # Use ubuntu-18.4 which has MySQL 5.7 for back-compat < PHP7.0
+
+          - php_versions: 5.6.20
+            wp_versions: "latest"
+            os: ubuntu-18.04
+
+          - php_versions: 5.6.20
+            wp_versions: "5.0"
+            os: ubuntu-18.04
+
+    env:
+      WP_VERSION: ${{ matrix.wp_versions }}
+      COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      COVERALLS_PARALLEL: true
+      COVERALLS: ${{ matrix.php_versions == 7.4 && matrix.wp_versions == 'latest' }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup PHP ${{ matrix.php_versions }}
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php_versions }}
+          tools: phpunit
+
+      - name: Start MySQL
+        run: |
+          sudo systemctl enable mysql.service
+          sudo systemctl start mysql.service
+
+      - name: Install dependencies
+        run: composer install
+
+      - name: Install and Run tests
+        if: ${{ matrix.php_versions == '7.0' || matrix.php_versions == '5.6.20' }}
+        run: |
+          wget -O bin/phpunit https://phar.phpunit.de/phpunit-5.phar
+          chmod +x bin/phpunit
+          source bin/php-tests.sh wordpress_test root root localhost false bin/phpunit
+
+      - name: Install and Run tests
+        if: ${{ matrix.php_versions != '7.0' && matrix.php_versions != '5.6.20' }}
+        run: source bin/php-tests.sh wordpress_test root root localhost
+
+  finish:
+    needs: [test-e2e, test-js, test-php]
+    name: Finish
+    runs-on: ubuntu-latest
+    steps:
+      - name: Coveralls Finished
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.github_token }}
+          parallel-finished: true
diff --git a/bin/php-tests.sh b/bin/php-tests.sh
new file mode 100644
index 00000000..db14c95b
--- /dev/null
+++ b/bin/php-tests.sh
@@ -0,0 +1,243 @@
+#!/usr/bin/env bash
+
+set +x
+
+if [ $# -lt 3 ]; then
+	echo "usage: $0 <db-name> <db-user> <db-pass> [db-host] [skip-database-creation] [phpunit]"
+	exit 1
+fi
+
+DB_NAME=$1
+DB_USER=$2
+DB_PASS=$3
+DB_HOST=${4-localhost}
+SKIP_DB_CREATE=${5-false}
+PHPUNIT_PATH=${6-false}
+
+WP_VERSION=${WP_VERSION:-latest}
+TMPDIR=${TMPDIR-/tmp}
+TMPDIR=$(echo $TMPDIR | sed -e "s/\/$//")
+
+PROJECT_DIR=$( git rev-parse --show-toplevel )
+PROJECT_SLUG=${PROJECT_SLUG:-$( basename "$PROJECT_DIR" | sed 's/^wp-//' )}
+
+
+if [ -z "$PROJECT_TYPE" ]; then
+	if [ -e style.css ]; then
+		PROJECT_TYPE=theme
+	elif grep -isqE "^[     ]*\*[     ]*Plugin Name[     ]*:" "$PROJECT_DIR"/*.php; then
+		PROJECT_TYPE=plugin
+	elif [ $( find . -maxdepth 2 -name wp-config.php | wc -l | sed 's/ //g' ) -gt 0 ]; then
+		PROJECT_TYPE=site
+	else
+		PROJECT_TYPE=unknown
+	fi
+fi
+
+export WP_TESTS_DIR=${WP_TESTS_DIR-$TMPDIR/wordpress-tests}
+export WP_CORE_DIR=${WP_CORE_DIR-$TMPDIR/wordpress/}
+
+echo "WP_TESTS_DIR is $WP_TESTS_DIR"
+echo "WP_CORE_DIR is $WP_CORE_DIR"
+
+function download() {
+    if [ `which curl` ]; then
+        curl -s "$1" > "$2";
+    elif [ `which wget` ]; then
+        wget -nv -O "$2" "$1"
+	else
+		echo 'wget or curl not found'
+		return 1
+    fi
+}
+
+function verbose_arg {
+	if [ "$VERBOSE" == 1 ]; then
+		echo '-v'
+	fi
+}
+
+if [[ $WP_VERSION =~ ^[0-9]+\.[0-9]+$ ]]; then
+	WP_TESTS_TAG="branches/$WP_VERSION"
+elif [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0-9]+ ]]; then
+	if [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0] ]]; then
+		# version x.x.0 means the first release of the major version, so strip off the .0 and download version x.x
+		WP_TESTS_TAG="tags/${WP_VERSION%??}"
+	else
+		WP_TESTS_TAG="tags/$WP_VERSION"
+	fi
+elif [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+	WP_TESTS_TAG="trunk"
+else
+	# http serves a single offer, whereas https serves multiple. we only want one
+	download http://api.wordpress.org/core/version-check/1.7/ /tmp/wp-latest.json
+
+	LATEST_VERSION=$(grep -o '"version":"[^"]*' /tmp/wp-latest.json | sed 's/"version":"//')
+	if [[ -z "$LATEST_VERSION" ]]; then
+		echo "Latest WordPress version could not be found"
+		exit 1
+	fi
+	WP_TESTS_TAG="tags/$LATEST_VERSION"
+fi
+
+echo "WP_TESTS_TAG is $WP_TESTS_TAG"
+
+function install_wp() {
+
+	if [ -d $WP_CORE_DIR ]; then
+		return;
+	fi
+
+	mkdir -p $WP_CORE_DIR
+
+	if [[ $WP_VERSION == 'nightly' || $WP_VERSION == 'trunk' ]]; then
+		mkdir -p $TMPDIR/wordpress-nightly
+		echo "Installing WP from https://wordpress.org/nightly-builds/wordpress-latest.zip to $WP_CORE_DIR"
+
+		download https://wordpress.org/nightly-builds/wordpress-latest.zip  $TMPDIR/wordpress-nightly/wordpress-nightly.zip
+		unzip -q $TMPDIR/wordpress-nightly/wordpress-nightly.zip -d $TMPDIR/wordpress-nightly/
+		mv $TMPDIR/wordpress-nightly/wordpress/* $WP_CORE_DIR
+	else
+		if [ $WP_VERSION == 'latest' ]; then
+			local ARCHIVE_NAME='latest'
+		elif [[ $WP_VERSION =~ [0-9]+\.[0-9]+ ]]; then
+			# https serves multiple offers, whereas http serves single.
+			download https://api.wordpress.org/core/version-check/1.7/ $TMPDIR/wp-latest.json
+			if [[ $WP_VERSION =~ [0-9]+\.[0-9]+\.[0] ]]; then
+				# version x.x.0 means the first release of the major version, so strip off the .0 and download version x.x
+				LATEST_VERSION=${WP_VERSION%??}
+			else
+				# otherwise, scan the releases and get the most up to date minor version of the major release
+				local VERSION_ESCAPED=`echo $WP_VERSION | sed 's/\./\\\\./g'`
+				LATEST_VERSION=$(grep -o '"version":"'$VERSION_ESCAPED'[^"]*' $TMPDIR/wp-latest.json | sed 's/"version":"//' | head -1)
+			fi
+			if [[ -z "$LATEST_VERSION" ]]; then
+				local ARCHIVE_NAME="wordpress-$WP_VERSION"
+			else
+				local ARCHIVE_NAME="wordpress-$LATEST_VERSION"
+			fi
+		else
+			local ARCHIVE_NAME="wordpress-$WP_VERSION"
+		fi
+
+		echo "Installing WP from https://wordpress.org/${ARCHIVE_NAME}.tar.gz to $WP_CORE_DIR"
+		download https://wordpress.org/${ARCHIVE_NAME}.tar.gz  $TMPDIR/wordpress.tar.gz
+		tar --strip-components=1 -zxmf $TMPDIR/wordpress.tar.gz -C $WP_CORE_DIR
+	fi
+
+	echo "WP installed to $WP_CORE_DIR"
+
+	download https://raw.github.com/markoheijnen/wp-mysqli/master/db.php $WP_CORE_DIR/wp-content/db.php
+}
+
+function install_test_suite() {
+	# portable in-place argument for both GNU sed and Mac OSX sed
+	if [[ $(uname -s) == 'Darwin' ]]; then
+		local ioption='-i .bak'
+	else
+		local ioption='-i'
+	fi
+
+	echo "Installing Tests to $WP_TESTS_DIR"
+
+	# set up testing suite if it doesn't yet exist
+	if [ ! -d $WP_TESTS_DIR ]; then
+		# set up testing suite
+		mkdir -p $WP_TESTS_DIR
+		svn co --quiet https://develop.svn.wordpress.org/${WP_TESTS_TAG}/tests/phpunit/includes/ $WP_TESTS_DIR/includes
+		svn co --quiet https://develop.svn.wordpress.org/${WP_TESTS_TAG}/tests/phpunit/data/ $WP_TESTS_DIR/data
+	fi
+
+	if [ ! -f wp-tests-config.php ]; then
+		download https://develop.svn.wordpress.org/${WP_TESTS_TAG}/wp-tests-config-sample.php "$WP_TESTS_DIR"/wp-tests-config.php
+		# remove all forward slashes in the end
+		WP_CORE_DIR=$(echo $WP_CORE_DIR | sed "s:/\+$::")
+		sed $ioption "s:dirname( __FILE__ ) . '/src/':'$WP_CORE_DIR/':" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/youremptytestdbnamehere/$DB_NAME/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/yourusernamehere/$DB_USER/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s/yourpasswordhere/$DB_PASS/" "$WP_TESTS_DIR"/wp-tests-config.php
+		sed $ioption "s|localhost|${DB_HOST}|" "$WP_TESTS_DIR"/wp-tests-config.php
+	fi
+	echo "Tests installed to $WP_TESTS_DIR"
+}
+
+function install_db() {
+	$(echo mysql -V)
+
+	if [ ${SKIP_DB_CREATE} = "true" ]; then
+		return 0
+	fi
+
+	# parse DB_HOST for port or socket references
+	local PARTS=(${DB_HOST//\:/ })
+	local DB_HOSTNAME=${PARTS[0]};
+	local DB_SOCK_OR_PORT=${PARTS[1]};
+	local EXTRA=""
+
+	if ! [ -z $DB_HOSTNAME ] ; then
+		if [ $(echo $DB_SOCK_OR_PORT | grep -e '^[0-9]\{1,\}$') ]; then
+			EXTRA=" --host=$DB_HOSTNAME --port=$DB_SOCK_OR_PORT"
+		elif ! [ -z $DB_SOCK_OR_PORT ] ; then
+			EXTRA=" --socket=$DB_SOCK_OR_PORT"
+		elif ! [ -z $DB_HOSTNAME ] ; then
+			EXTRA=" --host=$DB_HOSTNAME"
+		fi
+	fi
+
+	# create database
+	mysqladmin create $DB_NAME --user="$DB_USER" --password="$DB_PASS"$EXTRA || true
+	mysql --user="$DB_USER" --password="$DB_PASS" --execute="ALTER USER '$DB_USER'@'localhost' IDENTIFIED WITH mysql_native_password BY '$DB_PASS';";
+}
+
+function sync_project_dir() {
+	if [ "$PROJECT_TYPE" == plugin ]; then
+		INSTALL_PATH="$WP_CORE_DIR/wp-content/plugins/$PROJECT_SLUG"
+
+		# Rsync the files into the right location
+		mkdir -p "$INSTALL_PATH"
+		rsync -a $(verbose_arg) --exclude .git/hooks --delete "$PROJECT_DIR/" "$INSTALL_PATH/"
+
+		cd "$INSTALL_PATH"
+		echo "Location: $INSTALL_PATH"
+	elif [ "$PROJECT_TYPE" == theme ]; then
+		INSTALL_PATH="$WP_CORE_DIR/wp-content/themes/$PROJECT_SLUG"
+
+		# Rsync the files into the right location
+		mkdir -p "$INSTALL_PATH"
+		rsync -a $(verbose_arg) --exclude .git/hooks --exclude node_modules --delete "$PROJECT_DIR/" "$INSTALL_PATH/"
+		cd "$INSTALL_PATH"
+
+		# Clone the theme dependencies (i.e. plugins) into the plugins directory
+		if [ ! -z "$THEME_GIT_PLUGIN_DEPENDENCIES" ]; then
+			IFS=',' read -r -a dependencies <<< "$THEME_GIT_PLUGIN_DEPENDENCIES"
+			for dep in "${dependencies[@]}"
+			do
+				filename=$(basename "$dep")
+				git clone "$dep" "$WP_CORE_DIR/wp-content/plugins/${filename%.*}"
+			done
+		fi
+
+		echo "Location: $INSTALL_PATH"
+	elif [ "$PROJECT_TYPE" == site ]; then
+		cd "$PROJECT_DIR"
+		export INSTALL_PATH=$PROJECT_DIR
+	fi
+}
+
+install_wp
+install_test_suite
+install_db
+sync_project_dir
+
+if [ "$COVERALLS" == true ]; then
+	echo "Running PHP unit tests with coverage"
+	composer test-coveralls
+else
+	echo "Running PHP unit tests"
+	if [ "$PHPUNIT_PATH" == false ]; then
+		composer test
+	else
+		echo "Using custom PHPUnit located at $PHPUNIT_PATH"
+		$PHPUNIT_PATH
+	fi
+fi
diff --git a/composer.json b/composer.json
index 2db6a706..4da729f1 100644
--- a/composer.json
+++ b/composer.json
@@ -58,6 +58,10 @@
     ],
     "test-coverage": [
       "phpunit --coverage-html tests/coverage/phpunit"
+    ],
+    "test-coveralls": [
+      "phpunit --coverage-clover tests/coverage/clover.xml",
+      "php-coveralls --coverage_clover=tests/coverage/clover.xml -v"
     ]
   },
   "extra": {
diff --git a/package.json b/package.json
index d0646927..5db99716 100755
--- a/package.json
+++ b/package.json
@@ -128,18 +128,17 @@
     "test:e2e:watch": "npm run test:e2e -- --watch",
     "test:e2e:interactive": "npm run test:e2e -- --puppeteer-interactive",
     "test:e2e:ci": "npm run test:e2e -- --runInBand",
-    "test:e2e:coverage": "npm run test:e2e -- --coverage --coverageDirectory=tests/coverage/e2e",
-    "test:e2e:coveralls": "npm run test:e2e:coverage -- --runInBand --coverageReporters=json && npm run test:js:coverage-merge -- --no-js --reporter=text-lcov | coveralls",
+    "test:e2e:coverage": "npm run test:e2e -- --coverage --coverageReporters=lcov --coverageDirectory=tests/coverage/e2e",
+    "test:e2e:coveralls": "npm run test:e2e:coverage -- --runInBand --coverageReporters=json && npm run test:js:coverage-merge -- --no-js --reporter=text-lcov",
     "test:js": "wp-scripts test-unit-js tests/js",
     "test:js:help": "wp-scripts test-unit-js --help",
     "test:js:watch": "npm run test:js -- --watch",
     "test:js:coverage": "wp-scripts test-unit-js --coverage --coverageDirectory=tests/coverage/js",
-    "test:js:coveralls": "npm run test:js:coverage && coveralls < tests/coverage/js/lcov.info",
     "test:js:coverage-all": "run-s \"test:js:coverage -- --coverageReporters=json {@}\" \"test:e2e:coverage -- --coverageReporters=json {@}\" test:js:coverage-merge --",
     "test:js:coverage-merge": "node tests/merge-coverage.js --reporter=lcov",
     "test:php": "composer test",
     "test:php:coverage": "composer test-coverage",
-    "wp": "docker-compose exec -u xfs cli",
+    "wp": "docker-compose exec -T -u xfs cli",
     "xdebug:status": "bin/xdebug.sh status",
     "xdebug:on": "bin/xdebug.sh on",
     "xdebug:off": "bin/xdebug.sh off"
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index d301b43c..fc2a6b5a 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -12,7 +12,7 @@
 
 $_tests_dir = getenv( 'WP_TESTS_DIR' );
 
-// Travis CI & Vagrant SSH tests directory.
+// Github Actions, Travis CI & Vagrant SSH tests directory.
 if ( empty( $_tests_dir ) ) {
 	$_tests_dir = '/tmp/wordpress-tests';
 }