changed golang images to 1.20-slim

Author: Chrisyhjiang

samples/golang-http-form/app/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Go runtime as a parent image
-FROM golang:1.20-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the working directory in the builder container
 WORKDIR /src

samples/golang-mongodb-atlas/app/Dockerfile

@@ -1,5 +1,5 @@
 # Start from the official Go image.
-FROM golang:1.19-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the Current Working Directory inside the container
 WORKDIR /app

samples/golang-openai/app/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Go runtime as a parent image
-FROM golang:1.20-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the working directory in the builder container
 WORKDIR /src

samples/golang-rest-api/app/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Go runtime as a parent image
-FROM golang:1.20-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the working directory in the builder container
 WORKDIR /src

samples/golang-s3/app/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Go runtime as a parent image
-FROM golang:1.20-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the working directory in the builder container
 WORKDIR /src

samples/golang-slackbot/app/Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Go runtime as a parent image
-FROM golang:1.20-alpine as builder
+FROM golang:1.20-slim as builder
 
 # Set the working directory in the builder container
 WORKDIR /src