add docker example

.github/workflows/docker.yml

@@ -0,0 +1,22 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "*" ]
+  pull_request:
+    branches: [ "*" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build the Docker image
+      run: docker build --tag tgp --target deploy .
+    - run:
+        docker run tgp test -f /app/tgp
+    - run:
+        docker run tgp test -f /app/config.toml

Dockerfile

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+FROM docker.io/golang:1.20-alpine AS build
+WORKDIR /app
+ADD . ./
+RUN go mod download && go build ./cmd/tgp
+
+FROM docker.io/golang:1.20-alpine AS deploy
+RUN apk add --no-cache gcompat
+WORKDIR /app
+COPY --from=build /app/tgp ./
+ADD config.toml ./
+# EXPOSE 6666
+CMD ./tgp config.toml

config.toml

@@ -0,0 +1,2 @@
+listen_url = "0.0.0.0:6666"
+secret = "dd000102030405060708090a0b0c0d0e0f"