Upgrade Go version and add Air to Dockerfile

Add Air live‑reload tool and update the base image to golang:1.25.
Configure docker‑compose with code mounts and a cached Go module
volume, and switch the container command to run Air.

Dockerfile

@@ -1,24 +1,22 @@
 # Use the official Golang image as the base.
-FROM golang:1.22-alpine AS base
+FROM golang:1.25-alpine AS base
 
 # Install git (required by go modules) and any other utilities.
 RUN apk add --no-cache git
 
-
-
-
-
 # Set the working directory inside the container.
 WORKDIR /app
 
+# Install Air (live‑reload tool for Go).
+ENV PATH="/go/bin:${PATH}"
+RUN go install github.com/air-verse/air@latest
+
 # Cache go.mod and go.sum to speed up dependency installation.
 COPY go.mod go.sum ./
 RUN go mod download
 
 # Copy the rest of the source code.
 COPY . .
-# Build the binary after copying the source files.
-RUN go build -o /app/tmp/main ./cmd/app
 
-# The container will start Air, which watches the source files and rebuilds the app on change.
-CMD ["./tmp/main"]
+# Use Air to watch source files and run the app.
+CMD ["air", "-c", ".air.toml"]

docker-compose.yaml

@@ -3,9 +3,14 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
-
     ports:
       - "8080:8080"
     environment:
       - GO111MODULE=on
-    command: ["./tmp/main"]
+    volumes:
+      - .:/app # Mount your code
+      - /app/tmp # Exclude tmp (built binaries)
+      - go-mod-cache:/go/pkg/mod # Cache Go modules
+
+volumes:
+  go-mod-cache: