Add install.sh script

Also include install script in the released artefacts.

Author: ichernev

.github/workflows/ci.yaml

@@ -118,4 +118,5 @@ jobs:
         with:
           files: |
             release/deepctl-macos
-            release/deepctl-linux
+            release/deepctl-linux
+            install.sh

install.sh

@@ -0,0 +1,67 @@
+#!/bin/sh
+# Based on Deno installer. Copyright 2019 the Deno authors. All rights reserved. MIT license.
+# TODO(everyone): Keep this script simple and easily auditable.
+
+set -e
+
+if [ "$OS" = "Windows_NT" ]; then
+  target="windows"
+  echo "Windows is not supported at the moment, sorry" >&2
+  exit 1
+else
+  case $(uname -sm) in
+    "Darwin x86_64")
+      target="macos"
+      ;;
+    "Darwin arm64")
+      target="macos-arm"
+      echo "MacOSX on arm is not supported at the moment, sorry" >&2
+      exit 1
+      ;;
+    *)
+      target="linux"
+      ;;
+  esac
+fi
+
+LATEST_REL_URI="https://github.com/deepinfra/deepctl/releases/latest/download"
+
+if [ $# -eq 0 ]; then
+  SOURCE_URI="$LATEST_REL_URI/deepctl-${target}"
+else
+  SOURCE_URI="https://github.com/deepinfra/deepctl/releases/download/${1}/deepctl-${target}"
+fi
+
+EXE_NAME="${DEEPCTL_EXE_NAME:-deepctl}"
+DEEPCTL_INSTALL="${DEEPCTL_INSTALL:-/usr/local/bin}"
+EXE_TARGET="$DEEPCTL_INSTALL/$EXE_NAME"
+
+if [ "${DEEPCTL_INSTALL#$HOME}" != "$DEEPCTL_INSTALL" ]; then
+    # assume subdirs of $HOME are writable without sudo
+    MAYSUDO="env --"
+else
+    # assume everything outside $HOME requires sudo
+    echo -e "\nYou may be prompted for sudo password to write $EXE_TARGET" >&2
+    echo -e "To change the install folder you can set \$DEEPCTL_INSTALL:\n" >&2
+    echo -e "  curl $LATEST_REL_URI/install.sh | DEEPCTL_INSTALL=another/dir bash\n" >&2
+    MAYSUDO="sudo"
+fi
+
+if [ ! -d "$DEEPCTL_INSTALL" ]; then
+    $MAYSUDO mkdir -p "$DEEPCTL_INSTALL"
+fi
+
+$MAYSUDO curl --fail --location --progress-bar --output "$EXE_TARGET" "$SOURCE_URI"
+$MAYSUDO chmod +x "$EXE_TARGET"
+
+echo "deepctl was installed successfully to $EXE_TARGET"
+if ! command -v "$EXE_NAME" >/dev/null; then
+  case $SHELL in
+    /bin/zsh) shell_profile=".zshrc" ;;
+    *) shell_profile=".bashrc" ;;
+  esac
+  echo "Manually add the directory to your \$HOME/$shell_profile (or similar)"
+  echo "  echo 'export PATH=\"$DEEPCTL_INSTALL:\$PATH\"' >> \$HOME/$shell_profile"
+  echo "  export PATH=\"$DEEPCTL_INSTALL:\$PATH\""
+fi
+echo "Run '$EXE_NAME --help' to get started"