feature: use Docker API instead getting command output

.github/workflows/ci.yml

@@ -23,6 +23,9 @@ jobs:
           go-version: ${{ matrix.go-version }}
           check-latest: true
 
+      - name: Generate mocks
+        run: make generate-mocks
+
       - name: Run golangci-lint (latest)
         uses: golangci/golangci-lint-action@v6
         with:
@@ -46,6 +49,9 @@ jobs:
           check-latest: true
           cache: true
 
+      - name: Generate mocks
+        run: make generate-mocks
+
       - name: Verify dependencies
         run: go mod tidy && git diff --exit-code go.mod go.sum
 

.gitignore

@@ -1,2 +1,5 @@
 .idea/
-NOTES.md
+NOTES.md
+mocks/
+*.log
+berth

.mockery.yaml

@@ -0,0 +1,11 @@
+template: testify
+
+packages:
+  github.com/docker/docker/client:
+    config:
+      dir: ./mocks/client
+      filename: "APIClient.go"
+      pkgname: "client"
+      structname: "Mock{{.InterfaceName}}"
+    interfaces:
+      APIClient:

Makefile

@@ -15,13 +15,18 @@ run:
 	@echo "Running $(APP_NAME)..."
 	$(GO) run $(APP_PATH)
 
+generate-mocks:
+	go install github.com/vektra/mockery/v3@latest
+	export MOCKERY_IN_PACKAGE=true
+	mockery --config .mockery.yaml
+
 clean:
 	@echo "Cleaning up..."
 	$(GO) clean
 	rm -f $(APP_NAME)
 	@echo "Cleanup complete."
 
-test:
+test: generate-mocks
 	@echo "Running tests..."
 	$(GO) test ./...
 

cmd/berth/main.go

@@ -3,6 +3,7 @@ package main
 
 import (
 	"fmt"
+	"log/slog"
 	"os"
 
 	tea "github.com/charmbracelet/bubbletea"
@@ -11,9 +12,43 @@ import (
 
 // main function initializes and runs the Bubble Tea program.
 func main() {
-	p := tea.NewProgram(tui.InitialModel(), tea.WithAltScreen())
-	if _, err := p.Run(); err != nil {
-		fmt.Printf("Alas, there's been an error: %v", err)
+	// Setup logging to a file
+	logFile, err := os.OpenFile("berth.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		fmt.Printf("Error opening log file: %v\n", err)
+		os.Exit(1)
+	}
+	defer logFile.Close()
+
+	handler := slog.NewTextHandler(logFile, &slog.HandlerOptions{Level: slog.LevelDebug})
+	slog.SetDefault(slog.New(handler))
+
+	// Recover from panics and log them
+	defer func() {
+		if r := recover(); r != nil {
+			slog.Error("Panic recovered in main defer", "panic", r)
+			fmt.Printf("Alas, there's been a panic: %v\n", r)
+			os.Exit(1)
+		}
+	}()
+
+	var program *tea.Program
+	func() {
+		defer func() {
+			if r := recover(); r != nil {
+				slog.Error("Panic recovered during program initialization", "panic", r)
+				fmt.Printf("Alas, there's been a panic during init: %v\n", r)
+				os.Exit(1)
+			}
+		}()
+		slog.Debug("Initializing Bubble Tea program...")
+		program = tea.NewProgram(tui.InitialModel(), tea.WithAltScreen())
+	}()
+
+	slog.Debug("Running Bubble Tea program...")
+	if _, err := program.Run(); err != nil {
+		slog.Error("Program error", "error", err)
+		fmt.Printf("Alas, there's been an error: %v\n", err)
 		os.Exit(1)
 	}
 }

go.mod

@@ -6,25 +6,57 @@ require (
 	github.com/charmbracelet/bubbles v0.21.0
 	github.com/charmbracelet/bubbletea v1.3.6
 	github.com/charmbracelet/lipgloss v1.1.0
+	github.com/docker/docker v28.3.3+incompatible
+	github.com/opencontainers/image-spec v1.1.1
+	github.com/stretchr/testify v1.10.0
 )
 
 require (
+	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
 	github.com/charmbracelet/x/ansi v0.9.3 // indirect
 	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect
 	github.com/charmbracelet/x/term v0.2.1 // indirect
+	github.com/containerd/errdefs v1.0.0 // indirect
+	github.com/containerd/errdefs/pkg v0.3.0 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.5.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
 	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/moby/sys/atomicwriter v0.1.0 // indirect
+	github.com/moby/term v0.5.2 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0 // indirect
+	go.opentelemetry.io/otel v1.37.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.37.0 // indirect
+	go.opentelemetry.io/otel/metric v1.37.0 // indirect
+	go.opentelemetry.io/otel/trace v1.37.0 // indirect
 	golang.org/x/sync v0.15.0 // indirect
 	golang.org/x/sys v0.33.0 // indirect
-	golang.org/x/text v0.3.8 // indirect
+	golang.org/x/text v0.26.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	gotest.tools/v3 v3.5.2 // indirect
 )