Merge pull request #168 from saveriomiroddi/replace_travis_with_github_actions

Replace Travis with GitHub actions

.github/workflows/ci.yml

@@ -0,0 +1,11 @@
+name: CI
+
+on: pull_request
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run shellcheck
+      run: ci/run_shellcheck.sh

.travis.yml

@@ -1,14 +0,0 @@
----
-dist: bionic
-language: bash
-cache:
-  directories:
-  - "/opt/shellcheck"
-script:
-- mkdir -p /opt/shellcheck
-- "[[ ! -e /opt/shellcheck/shellcheck ]] && wget -qO- https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.x86_64.tar.xz
-  | tar -xJv -O shellcheck-stable/shellcheck | sudo tee /opt/shellcheck/shellcheck
-  > /dev/null || true"
-- sudo chmod +x /opt/shellcheck/shellcheck
-- "/opt/shellcheck/shellcheck --version"
-- "/opt/shellcheck/shellcheck $(grep -lzP '^#!/bin/\\w+sh' -r .)"

ci/run_shellcheck.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -o pipefail
+set -o errexit
+set -o nounset
+set -o errtrace
+shopt -s inherit_errexit
+
+if [[ ! -e /opt/shellcheck/shellcheck ]]; then
+  mkdir -p /opt/shellcheck
+
+  wget -qO- https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.x86_64.tar.xz \
+    | tar xJv -O shellcheck-stable/shellcheck \
+    > /opt/shellcheck/shellcheck
+
+  chmod +x /opt/shellcheck/shellcheck
+fi
+
+/opt/shellcheck/shellcheck --version
+
+grep -lZP '^#!/bin/\w+sh' -R | xargs -0 /opt/shellcheck/shellcheck