Add workflow for dev container

.github/workflows/docker.yml

@@ -0,0 +1,63 @@
+name: docker container
+
+on: 
+  push:
+    branches: 
+      - '**'
+    tags: 
+      - v*
+  pull_request:
+    branches:
+      - master
+    tags:
+      - v*
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Fetch all history for all tags and branches
+        run: git fetch --prune --unshallow
+
+      - name: Setup docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: medbha
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Step to get tag name
+        id: vars
+        run: echo "tag=${GITHUB_REF#refs/*/}" >> $GITHUB_OUTPUT
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        if: ${{ startsWith(github.ref, 'refs/heads') && github.ref == 'refs/heads/master' }}
+        with:
+          context: ci
+          file: Dockerfile.ubuntu
+          push: true
+          tags: hiddensymmetries/simsopt_dev:latest
+
+      - name: Build  for branches
+        uses: docker/build-push-action@v3
+        if: ${{ startsWith(github.ref, 'refs/heads') && github.ref != 'refs/heads/master' }}
+        with:
+          context: ci
+          file: Dockerfile.ubuntu
+          push: false
+          tags: hiddensymmetries/simsopt_dev:test
+
+      - name: Build and push for tag
+        uses: docker/build-push-action@v3
+        if: startsWith(github.event.ref, 'refs/tags/v')
+        with:
+          context: ci
+          file: Dockerfile.ubuntu
+          push: true
+          tags: "hiddensymmetries/simsopt_dev:${{steps.vars.outputs.tag}}"