ci: switch to GitHub Actions

.circleci/Dockerfile

@@ -1,4 +0,0 @@
-FROM ubuntu
-
-RUN apt-get update && \
-    apt-get -y install gcc valgrind time python

.circleci/README.md

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-Build and push container
-
-    docker build -t pithikos/test-c-thread-pool .
-    docker push pithikos/test-c-thread-pool

.circleci/config.yml

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-version: 2.1
-
-jobs:
-  test-normal-compile:
-    docker:
-      - image: pithikos/test-c-thread-pool
-    steps:
-      - checkout
-      - run:
-          name: Test
-          no_output_timeout: 2h
-          command: |
-            cd tests/
-            ./normal_compile.sh
-  test-optimized-compile:
-    docker:
-      - image: pithikos/test-c-thread-pool
-    steps:
-      - checkout
-      - run:
-          name: Test
-          no_output_timeout: 2h
-          command: |
-            cd tests/
-            ./optimized_compile.sh
-
-workflows:
-  test:
-    jobs:
-      - test-normal-compile
-      - test-optimized-compile

.github/workflows/tests.yml

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+name: Tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test-normal-compile:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run tests with standard compilation flags
+        working-directory: tests/
+        run: ./normal_compile.sh
+  test-optimized-compile:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run tests with optimized compilation flags
+        working-directory: tests/
+        run: ./optimized_compile.sh

README.md

@@ -1,4 +1,4 @@
-[![CircleCI](https://circleci.com/gh/Pithikos/C-Thread-Pool.svg?style=svg)](https://circleci.com/gh/Pithikos/C-Thread-Pool)
+[[![GitHub Actions](https://github.com/Pithikos/C-Thread-Pool/workflows/tests/badge.svg?branch=master)](https://github.com/api-platform/core/actions?query=workflow%3Atests+branch%3Amaster)
 
 # C Thread Pool