Add manylinux image build

Author: DanielBok

.github/workflows/manylinux-image.yml

@@ -0,0 +1,46 @@
+name: Build and push manylinux image
+
+on:
+  push:
+    branches:
+      - master
+      - image/*
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get current time
+        uses: 1466587594/get-current-time@v2
+        id: current-time
+        with:
+          format: YYYYMMDD
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: danielbok
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        id: docker_build
+        with:
+          context: ci
+          file: ci/nlopt_manylinux2014_x86_64.Dockerfile
+          push: true
+          tags: |
+            danielbok/nlopt_manylinux2014_x86_64:latest
+            danielbok/nlopt_manylinux2014_x86_64:${{ steps.current-time.outputs.formattedTime }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

ci/nlopt_manylinux2014_x86_64.Dockerfile

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+FROM quay.io/pypa/manylinux2014_x86_64:2020-12-25-6634688
+
+# cmake already version 3, thus no need to update cmake
+
+# add swig
+RUN yum update -y && \
+    curl -L https://sourceforge.net/projects/swig/files/swig/swig-4.0.2/swig-4.0.2.tar.gz/download --output /tmp/swig.tar.gz && \
+    mkdir -p /tmp/swig && \
+    tar -xvzf /tmp/swig.tar.gz -C /tmp/swig --strip-components 1 &> /dev/null && \
+    pushd /tmp/swig && \
+    ./configure --without-alllang --with-python3 && make -j2 && make install > /dev/null && \
+    popd