create a workflow for auto merge prs and a Dockerfile

.github/workflows/auto-merge.yaml

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+name: Auto Merge PRs
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  test-and-merge:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.18.1'
+
+      - name: Test
+        run: go test ./...
+
+      - name: Merge PR
+        if: github.event.pull_request.mergeable_state == 'clean'
+        uses: pascalgn/[email protected]
+        with:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          MERGE_LABELS: "auto-merge,approved" # Specify your labels here
+          MERGE_METHOD: "squash" # Choose merge method: merge, squash or rebase
+          MERGE_RETRIES: "3"
+          MERGE_RETRY_SLEEP: "10000"
+          MERGE_REMOVE_LABELS: "auto-merge,approved"

Dockerfile

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+FROM golang:1.20.3-alpine
+
+# Set the working dir
+WORKDIR /app
+
+# Copy the go.mod and go.sum files to the working dir
+COPY go.mod go.sum ./
+
+# Download and install any requires Go dependencies
+RUN go mod download
+
+# Copy the entire source to the working dir
+COPY . .
+
+# Build the go application
+RUN go build -o main .
+
+# Expose the port specified by the PORT env variiable
+EXPOSE 3000
+
+# Set the entry point of the container to the executable
+CMD ["./main"]