Replace panic with slog.Error when .env file loading fails

Dockerfile

@@ -10,8 +10,8 @@ WORKDIR /app
 COPY go.mod go.sum ./
 RUN go mod download
 
-COPY cmd/ ./
-COPY internal ./
+COPY cmd /app/cmd/
+COPY internal /app/internal/
 
 RUN CGO_ENABLED=0 GOOS=linux go build -o /CatsOfMastodonGo ./cmd/CatsOfMastodonBotGo/main.go
 

internal/config/config.go

@@ -22,7 +22,7 @@ var Config *config
 func Load() *config {
 	err := godotenv.Load()
 	if err != nil {
-		panic("Error loading .env file")
+		slog.Error("Error loading .env file - Using environment variables instead")
 	}
 
 	// Get mastodon instance