cover-letter-templater/Dockerfile.backend

FROM golang:1.24.4-alpine3.22@sha256:68932fa6d4d4059845c8f40ad7e654e626f3ebd3706eef7846f319293ab5cb7a AS base

# Set up workdir
WORKDIR /app

# Install dependencies
COPY go.mod go.sum ./
RUN go mod download

# ---- Build mode ----
FROM base AS build
WORKDIR /app

# Copy code, and compile 
COPY . .
RUN go build -o server main.go

# ---- Production mode ----
FROM alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715 AS prod
WORKDIR /app

# Copy built binary
COPY --from=build /app/server .

# Expose 8080 port
EXPOSE 8080

# Run server binary on start
CMD ["./server"]

# ---- Development mode ----
FROM base AS dev

# Install air for hot reloading
RUN go install github.com/air-verse/air@latest

# Copy code, and expose port
COPY . .
EXPOSE 8080

# Enable hot reloading for go
CMD [ "air" ]