Fix CI > Removing deprecated packages

Author: rafaelstz

Dockerfile

@@ -9,19 +9,18 @@ ENV XDEBUG_PORT 9000
 RUN apt-get update \
 	&& DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
 	software-properties-common \
-	python-software-properties \
 	&& apt-get update \
 	&& DEBIAN_FRONTEND=noninteractive apt-get install -y \
 	libfreetype6-dev \
 	libicu-dev \
-  	libssl-dev \
+  libssl-dev \
 	libjpeg62-turbo-dev \
 	libmcrypt-dev \
-	libpng12-dev \
 	libedit-dev \
 	libedit2 \
 	libxslt1-dev \
 	apt-utils \
+	gnupg \
 	redis-tools \
 	mysql-client \
 	git \