Docs : Dockerfile go version update

Dockerfile

@@ -1,20 +1,17 @@
-# Start from the official Go image
-FROM golang:1.17-alpine
+# Use Go version 1.20 image
+FROM golang:1.20-alpine
 
-# Set the Current Working Directory inside the container
+# Set the working directory inside the container
 WORKDIR /app
 
-# Copy go mod and sum files
+# Copy go.mod and go.sum files to the working directory
 COPY go.mod go.sum ./
 
-# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
+# Download all dependencies
 RUN go mod download
 
-# Copy the source code into the container
+# Copy the source code to the working directory
 COPY . .
 
 # Build the Go app
-RUN go build -o main .
-
-# Command to run the executable
-CMD ["./main"]
+RUN go build -o main .