feat: dockerfile for api

.gitignore

@@ -22,3 +22,5 @@
 .env.local
 
 ordr-api
+
+./nohup.out

api/Dockerfile

@@ -0,0 +1,31 @@
+# Stage 1: Build the application
+FROM golang:1.25.3-alpine AS builder
+
+WORKDIR /app
+
+# Copy go.mod and go.sum first to leverage Docker's caching
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy the rest of the application source code
+COPY . .
+
+# Build the Go application
+# CGO_ENABLED=0 disables Cgo for a fully static binary
+# -a links all packages statically
+# -installsuffix cgo_non_shared avoids issues with shared libraries
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo_non_shared -o main .
+
+# Stage 2: Create the final lean image
+FROM alpine:latest
+
+WORKDIR /root/
+
+# Copy the built binary from the builder stage
+COPY --from=builder /app/main .
+
+# Expose the port your Gin application listens on (e.g., 8080)
+EXPOSE 8080
+
+# Command to run the application
+CMD ["./ordr-api"]