dockerize go app

Dockerfile

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+# Build stage
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /app
+
+# Install git if needed for go mod
+RUN apk add --no-cache git
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+COPY main.go .
+
+RUN go build -o main .
+
+FROM alpine:latest
+
+WORKDIR /app
+
+COPY --from=builder /app/main .
+COPY keys ./keys
+
+EXPOSE 8080
+
+CMD ["./main",  "-cert=./keys/cert.crt.pem", "-key=./keys/localhost_key.pem", "-host=0.0.0.0:8080"]