Implemented web server stub as proof of concept

Dockerfile

@@ -91,4 +91,4 @@ RUN dep ensure
 RUN go install -v ./...
 
 # Run the app
-CMD [ "tensorflowapi" ]
+CMD [ "photoprism start" ]

Gopkg.lock

@@ -52,12 +52,34 @@
   revision = "95292e44976d1217cf3611dc7c8d9466877d3ed5"
   version = "v1.0.1"
 
+[[projects]]
+  branch = "master"
+  name = "github.com/gin-contrib/sse"
+  packages = ["."]
+  revision = "22d885f9ecc78bf4ee5d72b937e4bbcdc58e8cae"
+
+[[projects]]
+  name = "github.com/gin-gonic/gin"
+  packages = [
+    ".",
+    "binding",
+    "render"
+  ]
+  revision = "d459835d2b077e44f7c9b453505ee29881d5d12d"
+  version = "v1.2"
+
 [[projects]]
   name = "github.com/go-sql-driver/mysql"
   packages = ["."]
   revision = "d523deb1b23d913de5bdada721a6071e71283618"
   version = "v1.4.0"
 
+[[projects]]
+  name = "github.com/golang/protobuf"
+  packages = ["proto"]
+  revision = "b4deda0973fb4c70b50d226b1af49f3da59f5265"
+  version = "v1.1.0"
+
 [[projects]]
   name = "github.com/jinzhu/gorm"
   packages = [
@@ -92,6 +114,12 @@
   ]
   revision = "90697d60dd844d5ef6ff15135d0203f65d2f53b8"
 
+[[projects]]
+  name = "github.com/mattn/go-isatty"
+  packages = ["."]
+  revision = "0360b2af4f38e8d38c7fce2a9f4e702702d73a39"
+  version = "v0.0.3"
+
 [[projects]]
   name = "github.com/mattn/go-sqlite3"
   packages = ["."]
@@ -141,6 +169,12 @@
   revision = "25c197e02393bd44f50079945409009dd4d434f8"
   version = "v1.9.0"
 
+[[projects]]
+  name = "github.com/ugorji/go"
+  packages = ["codec"]
+  revision = "b4c50a2b199d93b13dc15e78929cfb23bfdf21ab"
+  version = "v1.1.1"
+
 [[projects]]
   name = "github.com/urfave/cli"
   packages = ["."]
@@ -167,15 +201,33 @@
   ]
   revision = "c73c2afc3b812cdd6385de5a50616511c4a3d458"
 
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  revision = "ac767d655b305d4e9612f5f6e33120b9176c4ad4"
+
 [[projects]]
   name = "google.golang.org/appengine"
   packages = ["cloudsql"]
   revision = "b1f26356af11148e710935ed1ac8a7f5702c7612"
   version = "v1.1.0"
 
+[[projects]]
+  name = "gopkg.in/go-playground/validator.v8"
+  packages = ["."]
+  revision = "5f1438d3fca68893a817e4a66806cea46a9e4ebf"
+  version = "v8.18.2"
+
+[[projects]]
+  name = "gopkg.in/yaml.v2"
+  packages = ["."]
+  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
+  version = "v2.2.1"
+
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "a6f9a83ff2c8ea983a59f7664e5594f0b44e75bf123a6e5b4643574e5ec1765f"
+  inputs-digest = "43ead2ce99499d86f5ea942bd5e6f14819fcaad810c70b336115eed6ac15f6f5"
   solver-name = "gps-cdcl"
   solver-version = 1

cmd/photoprism/photoprism.go

@@ -6,6 +6,7 @@ import (
 	"github.com/urfave/cli"
 	"os"
 	"github.com/araddon/dateparse"
+	"github.com/photoprism/photoprism/server"
 )
 
 func main() {
@@ -36,6 +37,37 @@ func main() {
 				return nil
 			},
 		},
+		{
+			Name:  "start",
+			Usage: "Starts web server",
+			Flags: []cli.Flag{
+				cli.IntFlag{
+					Name:  "port, p",
+					Usage: "HTTP server port",
+					Value: 80,
+				},
+				cli.StringFlag{
+					Name:  "ip, i",
+					Usage: "HTTP server IP address (optional)",
+					Value: "",
+				},
+			},
+			Action: func(context *cli.Context) error {
+				conf.SetValuesFromFile(photoprism.GetExpandedFilename(context.GlobalString("config-file")))
+
+				conf.SetValuesFromCliContext(context)
+
+				conf.CreateDirectories()
+
+				fmt.Printf("Starting web server at port %d...\n", context.Int("port"))
+
+				server.Start(context.String("ip"), context.Int("port"))
+
+				fmt.Println("Done.")
+
+				return nil
+			},
+		},
 		{
 			Name:  "migrate-db",
 			Usage: "Automatically migrates / initializes database",

server/server.go

@@ -0,0 +1,29 @@
+package server
+
+import (
+	"github.com/gin-gonic/gin"
+	"fmt"
+	"net/http"
+)
+
+func Start(address string, port int) {
+	router := gin.Default()
+
+	router.LoadHTMLGlob("templates/*")
+
+	router.Static("/assets", "./assets")
+
+	router.GET("/", func(c *gin.Context) {
+		c.HTML(http.StatusOK, "index.tmpl", gin.H{
+			"title": "PhotoPrism",
+		})
+	})
+
+	router.GET("/ping", func(c *gin.Context) {
+		c.JSON(200, gin.H{
+			"message": "pong",
+		})
+	})
+
+	router.Run(fmt.Sprintf("%s:%d", address, port))
+}

templates/index.tmpl

@@ -0,0 +1,5 @@
+<html>
+<h1>
+{{ .title }}
+</h1>
+</html>