From 4fbde01a27624e046fa86ac4681652a1be1febd8 Mon Sep 17 00:00:00 2001
From: Tom Nagle <tomanagle@gmail.com>
Date: Mon, 10 Jun 2024 20:48:08 +1000
Subject: [PATCH] feat: docker

---
 Dockerfile                | 26 ++++++++++++++++++++++++++
 Makefile                  | 30 ++++++++++++++++++++++++++++++
 cmd/main.go               |  5 ++---
 docker-compose.yml        | 15 +++++++++++++++
 internal/config/config.go | 13 +++++++++----
 5 files changed, 82 insertions(+), 7 deletions(-)
 create mode 100644 Dockerfile
 create mode 100644 docker-compose.yml

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..edbcf55
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,26 @@
+FROM golang:1.22-alpine AS base
+
+WORKDIR /app
+
+# Install dependencies required for the build process
+RUN apk add --no-cache make curl
+
+RUN curl -L https://github.com/tailwindlabs/tailwindcss/releases/download/v3.4.4/tailwindcss-linux-arm64 -o tailwindcss \
+    && chmod +x tailwindcss
+
+RUN go install github.com/a-h/templ/cmd/templ@latest
+
+FROM base AS development
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . ./
+
+RUN make build
+
+FROM base AS production
+
+COPY --from=development --chown=golang:golang /app /app
+
+USER golang
diff --git a/Makefile b/Makefile
index d1ee529..087c7b2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,6 @@
+IMAGE_ID ?= app
+NETWORK ?= app
+
 .PHONY: tailwind-watch
 tailwind-watch:
 	./tailwindcss -i ./static/css/input.css -o ./static/css/style.css --watch
@@ -18,12 +21,39 @@ templ-watch:
 dev:
 	go build -o ./tmp/$(APP_NAME) ./cmd/$(APP_NAME)/main.go && air
 
+.PHONY: start
+start:
+	go run cmd/*.go
+
+.PHONY: create-network
+create-network:
+	docker network ls | grep -q -w $(NETWORK) || docker network create -d bridge $(NETWORK)
+
+.PHONY: build-image
+build-image:
+	make create-network
+	docker images | grep $(NETWORK) -q  && [ "${FORCE}" != "true" ] \
+		&& echo "\nImage exists! Skipping... (use FORCE=true to force the image to rebuild)" \
+		|| docker build --target development -f ./Dockerfile . -t $(NETWORK)
+
 .PHONY: build
 build:
 	make tailwind-build
 	make templ-generate
 	go build -ldflags "-X main.Environment=production" -o ./bin/$(APP_NAME) ./cmd/$(APP_NAME)/main.go
 
+.PHONY: start
+start:
+	go run cmd/*.go
+
+.PHONY: down
+down:
+	docker compose -p $(NETWORK) down
+
+.PHONY: up
+up:
+	docker compose -p $(NETWORK) up
+
 .PHONY: vet
 vet:
 	go vet ./...
diff --git a/cmd/main.go b/cmd/main.go
index 0db45a4..8f1ef9d 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -32,12 +32,11 @@ func init() {
 }
 
 func main() {
-	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
 	r := chi.NewRouter()
-
 	cfg := config.MustLoadConfig()
-
+	logger := slog.New(slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{Level: cfg.LogLevel}))
 	db := database.MustOpen(cfg.DatabaseName)
+
 	passwordhash := passwordhash.NewHPasswordHash()
 
 	userStore := dbstore.NewUserStore(
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..88dbabe
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,15 @@
+version: "3.8"
+networks:
+  default:
+    name: ${NETWORK:-app}
+    external: true
+
+services:
+  app:
+    image: ${IMAGE_ID:-app}
+    command: make start
+    volumes:
+      - ../:/app
+    working_dir: /app
+    environment:
+      - LOG_LEVEL=debug
\ No newline at end of file
diff --git a/internal/config/config.go b/internal/config/config.go
index a7bfd7c..cba6601 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -1,11 +1,16 @@
 package config
 
-import "github.com/kelseyhightower/envconfig"
+import (
+	"log/slog"
+
+	"github.com/kelseyhightower/envconfig"
+)
 
 type Config struct {
-	Port              string `envconfig:"PORT" default:":4000"`
-	DatabaseName      string `envconfig:"DATABASE_NAME" default:"goth.db"`
-	SessionCookieName string `envconfig:"SESSION_COOKIE_NAME" default:"session"`
+	Port              string     `envconfig:"PORT" default:":4000"`
+	DatabaseName      string     `envconfig:"DATABASE_NAME" default:"goth.db"`
+	SessionCookieName string     `envconfig:"SESSION_COOKIE_NAME" default:"session"`
+	LogLevel          slog.Level `envconfig:"LOG_LEVEL" default:"info"`
 }
 
 func loadConfig() (*Config, error) {