echo VAR=value>env.txt
docker run -it --env-file=$(pwd)/env.txt alpine:3.9 sh/ # echo $VARvalue
<dependency>
<groupId>example</groupId>
<artifactId>rabbitmq-appender</artifactId>
<version>${rabbitmq-appender.version}</version>
<scope>system</scope>
<systemPath>${project.basedir}/src/main/resources/example.rabbitmq-appender-${rabbitmq-appender.version}.jar</systemPath>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>netstat -antp