From 60ce25e95cbd1b4753a2e8e28728ce08954488c5 Mon Sep 17 00:00:00 2001
From: Leons Aleksandrovs <58330666+Skrazzo@users.noreply.github.com>
Date: Sun, 13 Jul 2025 20:44:13 +0300
Subject: [PATCH] feat(prod): optimised backend image

---
 Dockerfile.backend       | 12 +++++--
 caddy/{Caddyfile => dev} |  0
 caddy/prod               | 13 +++++++
 development.yml          |  2 +-
 production.yml           | 75 ++++++++++++++++++++++++++++++++++++++++
 scripts/var.sh           |  3 +-
 6 files changed, 101 insertions(+), 4 deletions(-)
 rename caddy/{Caddyfile => dev} (100%)
 create mode 100644 caddy/prod
 create mode 100644 production.yml

diff --git a/Dockerfile.backend b/Dockerfile.backend
index 7b74d34..86162f0 100644
--- a/Dockerfile.backend
+++ b/Dockerfile.backend
@@ -7,13 +7,21 @@ WORKDIR /app
 COPY go.mod go.sum ./
 RUN go mod download
 
-# ---- Production mode ----
-FROM base AS prod
+# ---- Build mode ----
+FROM base AS build
+WORKDIR /app
 
 # Copy code, and compile 
 COPY . .
 RUN go build -o server main.go
 
+# ---- Production mode ----
+FROM alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715 AS prod
+WORKDIR /app
+
+# Copy built binary
+COPY --from=build /app/server .
+
 # Expose 8080 port
 EXPOSE 8080
 
diff --git a/caddy/Caddyfile b/caddy/dev
similarity index 100%
rename from caddy/Caddyfile
rename to caddy/dev
diff --git a/caddy/prod b/caddy/prod
new file mode 100644
index 0000000..bd49dae
--- /dev/null
+++ b/caddy/prod
@@ -0,0 +1,13 @@
+{
+    admin off
+    auto_https off
+}
+
+:8080 {
+    encode
+    reverse_proxy frontend:3000
+
+    handle_path /api* {
+        reverse_proxy backend:8080
+    }
+}
diff --git a/development.yml b/development.yml
index 69a87f5..30f102f 100644
--- a/development.yml
+++ b/development.yml
@@ -44,7 +44,7 @@ services:
     networks:
       - cover-letter-network
     volumes:
-      - ./caddy/Caddyfile:/etc/caddy/Caddyfile
+      - ./caddy/dev:/etc/caddy/Caddyfile
     ports:
       - 8000:8080
     depends_on:
diff --git a/production.yml b/production.yml
new file mode 100644
index 0000000..c52e88a
--- /dev/null
+++ b/production.yml
@@ -0,0 +1,75 @@
+services:
+  backend:
+    build:
+      context: ./backend
+      dockerfile: ../Dockerfile.backend
+      target: prod # Development mode with hot reload
+    restart: unless-stopped
+    container_name: cover-letter-backend
+
+    env_file:
+      - .env
+    environment:
+      # - GIN_MODE=release # For production
+      - GIN_MODE=release
+      # - POSTGRES_DB=postgresql://username:password@host:port/database_name
+      - POSTGRES_DB=postgresql://postgres:postgres@db:5432/cover-letter
+      # - Environment=prod # For production
+      - Environment=prod
+    networks:
+      - cover-letter-network
+    depends_on:
+      db: # Wait for database to be ready (Pass healthcheck)
+        condition: service_healthy
+  # frontend:
+  #   build:
+  #     context: ./frontend
+  #     dockerfile: ../Dockerfile.frontend
+  #     target: dev # Development stage
+  #   restart: unless-stopped
+  #   container_name: cover-letter-frontend
+  #
+  #   volumes:
+  #     - "./frontend:/app" # Mount frontend
+  #     - "/app/node_modules" # Ignore node_modules
+  #   networks:
+  #     - cover-letter-network
+  # proxy:
+  #   image: caddy:alpine
+  #   restart: unless-stopped
+  #   container_name: cover-letter-proxy
+  #
+  #   networks:
+  #     - cover-letter-network
+  #   volumes:
+  #     - ./caddy/Caddyfile:/etc/caddy/Caddyfile
+  #   ports:
+  #     - 8000:8080
+  #   depends_on:
+  #     - frontend
+  #     - backend
+  db:
+    image: postgres:13.21-alpine3.22
+    restart: unless-stopped
+    container_name: cover-letter-db
+
+    networks:
+      - cover-letter-network
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+      # - POSTGRES_HOST_AUTH_METHOD=trust # No password needed
+      - POSTGRES_DB=cover-letter
+    ports:
+      - 5432:5432
+    volumes:
+      - ./data/db:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 2s
+      timeout: 2s
+      retries: 5
+
+networks:
+  cover-letter-network:
+    driver: bridge
diff --git a/scripts/var.sh b/scripts/var.sh
index f785af2..445bd76 100755
--- a/scripts/var.sh
+++ b/scripts/var.sh
@@ -1,2 +1,3 @@
 #!/bin/bash
-export file="development.yml"
+# export file="development.yml"
+export file="production.yml"