Start of docker support

CHANGELOG.md

@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
 - Show version in web UI
 - Fixes and improvements to capturing output info and showing it in the UI
 - Improve index page (show URL of queued downloads instead of nothing)
+- Add docker support
 
 ## [v0.5.5] - 2022-04-09
 

Dockerfile

@@ -0,0 +1,47 @@
+# Start from golang base image
+FROM golang:1.18.2-alpine3.15 as builder
+
+# Install git. (alpine image does not have git in it)
+RUN apk update && apk add --no-cache git curl
+
+# Set current working directory
+WORKDIR /app
+
+RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /app/yt-dlp
+RUN chmod a+x /app/yt-dlp
+
+# Note here: To avoid downloading dependencies every time we
+# build image. Here, we are caching all the dependencies by
+# first copying go.mod and go.sum files and downloading them,
+# to be used every time we build the image if the dependencies
+# are not changed.
+
+# Copy go mod and sum files
+COPY go.mod ./
+COPY go.sum ./
+
+# Download all dependencies.
+RUN go mod download
+
+# Now, copy the source code
+COPY . .
+
+# Note here: CGO_ENABLED is disabled for cross system compilation
+# It is also a common best practise.
+
+# Build the application.
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o ./bin/gropple .
+
+# Finally our multi-stage to build a small image
+# Start a new stage from scratch
+FROM alpine:3.15.4
+
+# Copy the Pre-built binary file
+COPY --from=builder /app/bin/gropple .
+COPY --from=builder /app/yt-dlp /bin/
+
+# Install things we need to support yt-dlp
+RUN apk update && apk add --no-cache python3 ffmpeg
+
+# Run executable
+CMD ["./gropple", "--config-path", "/config/gropple.json"]

config/config.go

@@ -61,13 +61,13 @@ func (cs *ConfigService) LoadTestConfig() {
 
 func (cs *ConfigService) LoadDefaultConfig() {
 	defaultConfig := Config{}
-	stdProfile := DownloadProfile{Name: "standard video", Command: "youtube-dl", Args: []string{
+	stdProfile := DownloadProfile{Name: "standard video", Command: "yt-dlp", Args: []string{
 		"--newline",
 		"--write-info-json",
 		"-f",
 		"bestvideo[ext=mp4]+bestaudio[ext=m4a]/best[ext=mp4]/best",
 	}}
-	mp3Profile := DownloadProfile{Name: "standard mp3", Command: "youtube-dl", Args: []string{
+	mp3Profile := DownloadProfile{Name: "standard mp3", Command: "yt-dlp", Args: []string{
 		"--newline",
 		"--write-info-json",
 		"--extract-audio",
@@ -79,7 +79,7 @@ func (cs *ConfigService) LoadDefaultConfig() {
 
 	defaultConfig.Server.Port = 6123
 	defaultConfig.Server.Address = "http://localhost:6123"
-	defaultConfig.Server.DownloadPath = "./"
+	defaultConfig.Server.DownloadPath = "/downloads"
 
 	defaultConfig.UI.PopupWidth = 500
 	defaultConfig.UI.PopupHeight = 500

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"embed"
 	"encoding/json"
+	"flag"
 	"fmt"
 	"html/template"
 	"io"
@@ -43,8 +44,17 @@ type errorResponse struct {
 func main() {
 	log.Printf("Starting gropple %s - https://github.com/tardisx/gropple", versionInfo.GetInfo().CurrentVersion)
 
+	var configPath string
+	flag.StringVar(&configPath, "config-path", "", "path to config file")
+	flag.Parse()
+
 	configService = &config.ConfigService{}
-	configService.DetermineConfigDir()
+	if configPath != "" {
+		configService.ConfigPath = configPath
+	} else {
+		configService.DetermineConfigDir()
+	}
+
 	exists, err := configService.ConfigFileExists()
 	if err != nil {
 		log.Fatal(err)