Dockerfile

# **Base Go Dependencies**
FROM golang:1.24.1 AS deps

WORKDIR /usr/src/app

COPY go.mod go.sum ./
RUN go mod download

# **Install Swagger CLI**
FROM deps AS install-swagger
RUN go install github.com/swaggo/swag/cmd/swag@latest

# **Generate Swagger Docs (Only if files change)**
FROM deps AS swagger
COPY . ./
COPY --from=install-swagger /go/bin/swag /usr/local/bin/swag
RUN swag init --generalInfo cmd/main.go

# **Build App**
FROM deps AS builder

WORKDIR /usr/src/app

COPY . ./
COPY --from=swagger /usr/src/app/docs ./docs
RUN go build -v -o /usr/local/bin/app cmd/main.go

# **Final Stage: Minimal Image**
FROM golang:1.24.1 AS final

WORKDIR /usr/src/app

COPY --from=builder /usr/local/bin/app /usr/local/bin/app
COPY --from=builder /usr/src/app/migrations ./migrations
COPY --from=builder /usr/src/app/docs ./docs

EXPOSE 8080

CMD ["app"]