added docker file for deploy

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: CI # the name of our workflow is 'CI'
+
+# run this workflow when we push to the 'main' branch
+on:	
+  push:
+    branches: [main]
+
+# the list of jobs in this workflow
+jobs:
+
+# define a job
+  build: 
+    name: Build and Push Container Image # the job's full name
+    runs-on: ubuntu-latest # the OS that this job runs on
+
+  # we need write permissions to publish the package
+    permissions: 
+      packages: write
+
+  # the steps that this job consists of
+    steps:
+    - name: Checkout  # check out our repo
+      uses: actions/checkout@v3
+
+    - name: Log in to the container registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    # generate the tags that we'll use to name our image
+    - name: Get Docker metadata
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: ghcr.io/${{ github.repository }}
+        tags: | # tag with commit hash and with 'latest'
+          type=sha 
+          type=raw,value=latest,enable={{is_default_branch}}
+    
+    # build and push our image, using output from previous step
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v3
+      with:
+        context: .
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,6 @@
+FROM python:3.10
+RUN pip install pipenv
+WORKDIR /app
+COPY . .
+RUN pipenv install --system
+CMD gunicorn app:app -b 0.0.0.0:8080

Pipfile

@@ -6,6 +6,7 @@ name = "pypi"
 [packages]
 flask = "*"
 markdown = "*"
+gunicorn = "*"
 
 [dev-packages]