Init

.gitlab-ci.yml

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+build:
+  stage: build
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
+  script:
+    - mkdir -p /kaniko/.docker
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
+    - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG --destination $CI_REGISTRY_IMAGE:latest
+  rules:
+    - if: $CI_COMMIT_TAG

Dockerfile

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+FROM golang:1.20-alpine as builder
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN go build -o main .
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+WORKDIR /root
+COPY --from=builder /app/main .
+ENTRYPOINT ["./main"]

Dockerfile.debug

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+FROM golang:1.20
+RUN apt-get update && apt-get install dumb-init
+RUN go install github.com/go-delve/delve/cmd/dlv@latest
+WORKDIR /app
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+CMD ["dlv", "--listen=:40000", "--headless=true", "--api-version=2", "--accept-multiclient", "debug", "--build-flags=-buildvcs=false", "--continue"]

Dockerfile.dev

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+FROM golang:1.20-alpine
+RUN apk --no-cache add dumb-init
+WORKDIR /app
+ENTRYPOINT ["/usr/bin/dumb-init", "--"]
+CMD ["go", "run", "main.go"]

docker-compose.debug.yml

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+services:
+  myapp:
+    build:
+      context: .
+      dockerfile: Dockerfile.debug
+    security_opt:
+      - seccomp:unconfined
+    cap_add:
+      - SYS_PTRACE
+    ports:
+      - "40000:40000"
+    volumes:
+      - .:/app

docker-compose.yml

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+services:
+  myapp:
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+    volumes:
+      - .:/app