Merge branch 'renovate/composer-2.x' into 'master'

Update composer Docker tag to v2.5.5

See merge request !123

Dockerfile

@@ -3,7 +3,7 @@ COPY modsec_logger.go /src/modsec_logger.go
 WORKDIR /src
 RUN go build -tags netgo -o modsec_logger modsec_logger.go
 
-FROM composer:2.2.9 as build
+FROM composer:2.5.5 as build
 
 ADD . /build
 WORKDIR /build

Dockerfile.dev

-FROM composer:2.2.9
+FROM composer:2.5.5
 
 ARG uid=1000
 ARG gid=1000