How can I add an Icon to to Box Decoration?

I want to add an Icon to Box Decoration like this you are seeing images on left side.

How do I add this with box decoration

Here is the code:

    Container(
             width: 307,
             decoration: BoxDecoration(
                border: Border.all(color: Colors.blueAccent),
               borderRadius: BorderRadius.circular(10.0),
               shape: BoxShape.rectangle,
             ),
           child: CountryListPick(
            onChanged: (list){
              print(list?.name);
                },
              theme: CountryTheme(
                labelColor: Colors.white,
                isShowFlag:true,
                isShowCode: false,
                isShowTitle:true,
                isDownIcon: true,
                showEnglishName: true,
              ),
            ),
           ),

>Solution :

You can use a row as a children of container

Container(
                  width: 307,
                  decoration: BoxDecoration(
                    border: Border.all(color: Colors.blueAccent),
                    borderRadius: BorderRadius.circular(10.0),
                    shape: BoxShape.rectangle,
                  ),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Flexible(
                        child: Image.asset(
                          "assets/images/cover_placeholder.png",
                          height: 30,
                          width: 30,
                          fit: BoxFit.contain,
                        ),
                      ),
                      SizedBox(width: 12,),
                      Flexible(
                        child: CountryListPick(
                          onChanged: (list){
                            print(list?.name);
                          },
                          theme: CountryTheme(
                            labelColor: Colors.white,
                            isShowFlag:true,
                            isShowCode: false,
                            isShowTitle:true,
                            isDownIcon: true,
                            showEnglishName: true,
                          ),
                        ),
                      ),
                    ],
                  ),
                ),