tsk-8: Added docker support (#13)

Closes #8

Reviewed-on: phoenix/textsender-auth#13
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

.dockerignore.yaml

@@ -0,0 +1,9 @@
+vendor/
+
+# Ignore git directory
+.git/
+
+.gitea/
+
+# Ignore environment files (configure via docker-compose instead)
+.env*

.env.docker.sample

@@ -0,0 +1,7 @@
+SECRET_KEY=NULqYIzgt28bTiyziCd7IOO7b6LnWDW!
+DB_NAME=textsender_auth_db
+DB_USER=textsender_auth
+DB_PASSWORD=password
+DB_HOST=auth_db
+DB_PORT=5432
+DB_SSLMODE=disable

.gitignore

@@ -2,5 +2,6 @@
 
 .env
 .env.local
+.env.docker
 
 /vendor

Dockerfile

@@ -0,0 +1,52 @@
+# Multi-stage Dockerfile for Go application
+FROM golang:1.25.3 AS builder
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    openssh-client git
+
+RUN mkdir -p -m 0700 ~/.ssh && \
+    ssh-keyscan git.kundeng.us >> ~/.ssh/known_hosts
+
+# Configure Git to use SSH for GitHub
+RUN git config --global url."ssh://git@git.kundeng.us".insteadOf "https://git.kundeng.us"
+
+# Set up the Go environment for private modules
+ENV GOPRIVATE=git.kundeng.us
+
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+RUN --mount=type=ssh mkdir src && \
+    go mod download
+
+# Copy source code
+COPY ./cmd ./cmd
+COPY ./internal ./internal
+COPY ./Makefile .
+COPY ./.env .
+COPY ./migrations ./migrations
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux make build
+
+# Runtime stage
+FROM alpine:latest AS production
+
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /root/
+
+# Copy the pre-built binary file from the previous stage
+COPY --from=builder /app/textsender-auth .
+COPY --from=builder /app/.env ./
+COPY --from=builder /app/migrations ./migrations
+
+# Expose port
+EXPOSE 9080
+
+# Command to run the executable
+CMD ["./textsender-auth"]

cmd/api/main.go

@@ -14,7 +14,7 @@ import (
 	"github.com/go-chi/chi/v5/middleware"
 
 	"git.kundeng.us/phoenix/textsender-auth/internal/config"
-	"git.kundeng.us/phoenix/textsender-auth/internal/db"
+	database "git.kundeng.us/phoenix/textsender-auth/internal/db"
 	"git.kundeng.us/phoenix/textsender-auth/internal/handler"
 	"git.kundeng.us/phoenix/textsender-auth/internal/handler/endpoint"
 	mdleware "git.kundeng.us/phoenix/textsender-auth/internal/middleware"
@@ -28,7 +28,7 @@ func main() {
 		os.Exit(-1)
 	}
 
-	db, err := db.NewDatabase(cfg.GetDBConnString())
+	db, err := database.NewDatabase(cfg.GetDBConnString())
 	if err != nil {
 		log.Fatalf("Failed to connect to database: %v", err)
 	}
@@ -43,6 +43,13 @@ func main() {
 		}
 		log.Println("Database reset completed. Exiting.")
 		return
+	} else {
+		if exists, err := database.TableExists(ctx, db.Pool, "users"); err == nil && !exists {
+			fmt.Println("Resetting database")
+			err = db.ResetDatabase(ctx)
+		} else {
+			fmt.Println(err.Error())
+		}
 	}
 
 	// Services

docker-compose.yaml

@@ -0,0 +1,44 @@
+version: '3.8' # Use a recent version
+
+services:
+  auth_api:
+    build: # Tells docker-compose to build the Dockerfile in the current directory
+      context: .
+      ssh: ["default"]  # Uses host's SSH agent
+    container_name: textsender_auth # Optional: Give the container a specific name
+    ports:
+      # Map host port 8000 to container port 3000 (adjust as needed)
+      - "9080:9080"
+    env_file:
+      - .env
+    depends_on:
+      auth_db:
+        condition: service_healthy # Wait for the DB to be healthy before starting the app
+    restart: unless-stopped # Optional: Restart policy
+
+  # PostgreSQL Database Service
+  auth_db:
+    image: postgres:18.0-alpine # Use an official Postgres image (Alpine variant is smaller)
+    container_name: textsender_auth_db # Optional: Give the container a specific name
+    environment:
+      # These MUST match the user, password, and database name in the DATABASE_URL above
+      POSTGRES_USER: ${POSTGRES_AUTH_USER:-textsender_auth}
+      POSTGRES_PASSWORD: ${POSTGRES_AUTH_PASSWORD:-password}
+      POSTGRES_DB: ${POSTGRES_AUTH_DB:-textsender_auth_db}
+    volumes:
+      # Persist database data using a named volume
+      - postgres_data:/var/lib/postgresql/data
+    ports: []
+    healthcheck:
+        # Checks if Postgres is ready to accept connections
+        test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
+        interval: 10s
+        timeout: 5s
+        retries: 5
+        start_period: 10s
+    restart: always # Optional: Restart policy
+
+# Define the named volume for data persistence
+volumes:
+  postgres_data:
+    driver: local # Use the default local driver

internal/config/config.go

@@ -27,11 +27,9 @@ type ConnectionInfo struct {
 	SslMode  string
 }
 
-
 const Port = "9080"
 const App_Name = "textsender_auth"
 
-
 func (ci ConnectionInfo) Parse() string {
 	return fmt.Sprintf("postgres://%s:%s@%s:%d/%s?sslmode=%s", ci.Username, ci.Password, ci.Host, ci.Port, ci.Database, ci.SslMode)
 }

internal/db/connection.go

@@ -54,6 +54,25 @@ func NewDatabase(connString string) (*Database, error) {
 	return &Database{Pool: pool}, nil
 }
 
+func TableExists(ctx context.Context, conn *pgxpool.Pool, tableName string) (bool, error) {
+	var exists bool
+
+	query := `
+        SELECT EXISTS (
+            SELECT FROM information_schema.tables
+            WHERE table_schema = 'public'
+            AND table_name = $1
+        );
+    `
+
+	err := conn.QueryRow(ctx, query, tableName).Scan(&exists)
+	if err != nil {
+		return false, fmt.Errorf("error checking if table exists: %w", err)
+	}
+
+	return exists, nil
+}
+
 func (db *Database) Close() {
 	if db.Pool != nil {
 		db.Pool.Close()