Merge pull request #1613 from porter-dev/nafees/install-shell-script

Add install.sh installation script

services/cli_install_script_container/Dockerfile

@@ -0,0 +1,8 @@
+FROM golang:1.17.6-alpine3.14
+
+WORKDIR /app
+COPY . .
+
+RUN go build -o serve main.go
+
+ENTRYPOINT [ "./serve" ]

services/cli_install_script_container/install.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+# Script to install the Porter CLI on macOS, Linux, and WSL
+
+osname=""
+
+check_prereqs() {
+    command -v curl >/dev/null 2>&1 || { echo "[ERROR] curl is required to install the Porter CLI." >&2; exit 1; }
+    command -v unzip >/dev/null 2>&1 || { echo "[ERROR] unzip is required to install the Porter CLI." >&2; exit 1; }
+}
+
+download_and_install() {
+    check_prereqs
+
+    echo "[INFO] Since the Porter CLI gets installed in /usr/local/bin, you may be asked to input your password."
+
+    name=$(curl -s https://api.github.com/repos/porter-dev/porter/releases/latest | grep "browser_download_url.*/porter_.*_${osname}_x86_64\.zip" | cut -d ":" -f 2,3 | tr -d \")
+    name=$(basename $name)
+
+    curl -L https://github.com/porter-dev/porter/releases/latest/download/$name --output $name
+    unzip -a $name
+    rm $name
+
+    chmod +x ./porter
+    sudo mv ./porter /usr/local/bin/porter
+
+    command -v porter >/dev/null 2>&1 || { echo "[ERROR] There was an error installing the Porter CLI. Please try again." >&2; exit 1; }
+
+    exit
+}
+
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+    if uname -a | grep -q '^Linux.*Microsoft'; then
+        echo "[WARNING] WSL support is experimental and may result in crashes."
+    fi
+    osname="Linux"
+    download_and_install
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    osname="Darwin"
+    download_and_install
+fi
+
+echo "[ERROR] Unsupported operating system."
+exit 1

services/cli_install_script_container/main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+)
+
+func serve(w http.ResponseWriter, req *http.Request) {
+	contents, err := ioutil.ReadFile("install.sh")
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+	w.WriteHeader(http.StatusOK)
+	w.Header().Add("Content-Type", "text/plain")
+	w.Write(contents)
+}
+
+func main() {
+	var port string
+	if port = os.Getenv("PORT"); port == "" {
+		port = "80"
+	}
+
+	http.HandleFunc("/", serve)
+	http.ListenAndServe(fmt.Sprintf(":%s", port), nil)
+}