chore: added a build script for install from source

build.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+#
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+
+readonly MCP_SERVER_DIR="devops-mcp-server"
+readonly BINARY_NAME="devops-mcp-server"
+
+
+# Prints an error message to standard error.
+err() {
+  echo "[$(date +'%Y-%m-%dT%H:%M:%S%z') ERROR]: $*" >&2
+}
+
+# Checks if the 'go' is available.
+is_go_installed() {
+
+  INSTALLED_GO_VERSION=$(apt show golang-go 2>/dev/null | grep Version | awk '{print $2}' | head -n 1)
+
+  if [[ -z "${INSTALLED_GO_VERSION}" ]]; then
+    err "golang-go package does not seem to be installed."
+    exit 1
+  fi
+
+  REQUIRED_GO_VERSION="1.24.0"
+  if dpkg --compare-versions "${INSTALLED_GO_VERSION}" "lt" "${REQUIRED_GO_VERSION}"; then
+    err "golang-go ${INSTALLED_GO_VERSION} is older than ${REQUIRED_GO_VERSION}."
+    exit 1
+  fi
+}
+
+
+# Installs Go using apt.
+install_go() {
+  echo "Go tooling not found. Installing golang-go..."
+  # Recommended method for gLinux: go/go-getting-started
+  sudo apt update && sudo apt install -y golang-go || { err "apt install failed."; return 1; }
+  echo "Go installed successfully."
+
+  # Attempt to refresh the current shell environment.
+  if [[ -f "${HOME}/.bashrc" ]]; then
+    echo "Sourcing ${HOME}/.bashrc to update PATH in current session..."
+    # shellcheck source=/dev/null
+    source "${HOME}/.bashrc"
+  fi
+}
+
+# Builds the MCP Server
+build_mcp() {
+  echo "Building '${MCP_SERVER_DIR}'..."
+  if [[ ! -d "${MCP_SERVER_DIR}" ]]; then
+    err "Error: MCP serverdirectory '${MCP_SERVER_DIR}' not found."
+    return 1
+  fi
+  (
+    cd ${MCP_SERVER_DIR}
+    go mod tidy
+    go build -o "../${BINARY_NAME}"
+    echo "Successfully built '${BINARY_NAME}'."
+  )
+}
+
+main() {
+  if ! is_go_installed; then
+    echo "Go tooling not detected."
+    install_go || { err "Go installation failed. Exiting."; exit 1; }
+
+    # Re-check if 'go' is available after installation and sourcing.
+    if ! is_go_installed; then
+      err "Go was installed, but still does not meet minimum Go tooling needed."
+      exit 1
+    fi
+    echo "Go is now detected."
+  fi
+
+  echo ""
+  echo "Building MCP Server"
+  build_mcp || { err "Go build for MCP server failed. Exiting."; exit 1; }
+}
+
+main "$@"