Add user-data script for installing service on a cloud provider VM

The script will:
1. Install necessary dependencies
2. Create the DB file
3. Run the migrations
4. Initialize the DB with the seed data
5. Move the systemd unit file to the correct location
6. Enable the systemd service

The script will NOT:
- Create the `.env` file
- Start the server (the systemd service will start the server on reboot tho)

Makefile

@@ -2,7 +2,6 @@ SQLITE_DB_FILE ?= sqlite/nutrition-tracker.db
 IT_SQLITE_DB_FILE ?= it/nutrition-tracker-test.db
 SQLITE_MIGRATIONS_DIR ?= sqlite/migrations
 GOCOVERDIR ?= coverage
-CGO_ENABLED=1 # Required for sqlite3 driver
 
 SQLC_VERSION ?= v1.27.0
 GOLANG_MIGRATE_VERSION ?= v4.18.1
@@ -12,9 +11,16 @@ HTMX_VERSION ?= 2.0.3
 BOOTSTRAP_VERSION ?= 5.3.3
 BOOTSTRAP_ICONS_VERSION ?= 1.11.3
 
+install: install-go-deps init-db build
+	cp -u prod/nutrition-tracker.service /etc/systemd/system/nutrition-tracker.service
+	systemctl enable nutrition-tracker.service
+
+start:
+	systemctl start nutrition-tracker.service
+
 install-go-deps:
 	go install -v github.com/sqlc-dev/sqlc/cmd/sqlc@$(SQLC_VERSION)
-	go install -v -tags 'sqlite3' github.com/golang-migrate/migrate/v4/cmd/migrate@$(GOLANG_MIGRATE_VERSION)
+	CGO_ENABLED=1 go install -v -tags 'sqlite3' github.com/golang-migrate/migrate/v4/cmd/migrate@$(GOLANG_MIGRATE_VERSION)
 	go install -v golang.org/x/tools/cmd/stringer@$(STRINGER_VERSION)
 
 init-db: migrate-up

prod/nutrition-tracker.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=Nutrition Tracker server
+ConditionFileNotEmpty=/root/nutrition-tracker/.env
+ConditionPathExists=/root/nutrition-tracker/sqlite/nutrition-tracker.db
+After=multi-user.target
+Wants=multi-user.target
+StartLimitIntervalSec=600
+StartLimitBurst=5
+
+[Service]
+Type=simple
+ExecStartPre=/bin/bash -c 'echo "$(date +"%%F-%%T") starting" >> /var/log/nutrition-tracker-starts.log'
+ExecStart=/bin/bash -c '/root/nutrition-tracker/out/nutrition-tracker /root/nutrition-tracker/.env 2>&1 | tee /var/log/nutrition-tracker.log && exit ${PIPESTATUS[0]}'
+ExecStartPost=/bin/bash -c 'echo "$(date +"%%F-%%T") started" >> /var/log/nutrition-tracker-starts.log'
+Restart=on-failure
+TimeoutSec=30
+
+[Install]
+WantedBy=multi-user.target

prod/user-data.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# logging
+exec >> /var/log/user-data.log
+exec 2>&1
+
+set -ex -o pipefail
+
+export HOME=/root
+
+install_go() {
+  curl -LO https://go.dev/dl/go1.23.1.linux-amd64.tar.gz
+  rm -rf /usr/local/go
+  tar -C /usr/local -xzf go1.23.1.linux-amd64.tar.gz
+  echo "export PATH=$PATH:/usr/local/go/bin:/root/go/bin" >> /etc/profile
+  echo "export GOPATH=/root/go" >> /etc/profile
+  source /etc/profile
+  go version
+}
+
+main() {
+  apt-get update
+
+  if ! which make || ! which gcc; then
+    apt-get install -y build-essential
+    which make
+    which gcc
+  fi
+
+  if ! which go; then
+    install_go
+  fi
+
+  if ! which sqlite3; then
+    apt-get install -y sqlite3
+    which sqlite3
+  fi
+
+  if [[ ! -d ~/nutrition-tracker ]]; then
+    cd ~
+    git clone https://github.com/szabolcs-horvath/nutrition-tracker.git
+    cd nutrition-tracker
+    make install
+  else
+    echo "Nutrition Tracker already installed."
+  fi
+}
+
+main "$@"

repository/util.go

@@ -5,15 +5,22 @@ import (
 	"github.com/szabolcs-horvath/nutrition-tracker/util"
 	"html/template"
 	"io"
+	"os"
+	"path/filepath"
 	"time"
 )
 
 var templates *template.Template
 
 func init() {
+	exe, err := os.Executable()
+	if err != nil {
+		panic(err.Error())
+	}
+	pwd := filepath.Dir(exe)
 	templates = template.New("templates").Funcs(util.TemplateFuncs()).Funcs(TemplateFuncs())
-	template.Must(templates.ParseGlob("web/templates/*.gohtml"))
-	template.Must(templates.ParseGlob("web/templates/**/*.gohtml"))
+	template.Must(templates.ParseGlob(pwd + "/../web/templates/*.gohtml"))
+	template.Must(templates.ParseGlob(pwd + "/../web/templates/**/*.gohtml"))
 }
 
 func Render(w io.Writer, name string, data any) error {