fix: make MAX_MEMORY a default env variable

.woodpecker.yml

@@ -22,7 +22,7 @@ matrix:
   include:
   - MAX_MEMORY: "500mb"
     ALPINE_VERSION: "3.18.2"
-    REDIS_VERSION: "7.0.11"
+    REDIS_VERSION: "7.0.12"
   - MAX_MEMORY: "500mb"
     ALPINE_VERSION: "3.17.4"
-    REDIS_VERSION: "7.0.11"
+    REDIS_VERSION: "7.0.12"

Dockerfile

@@ -1,10 +1,10 @@
-ARG MAX_MEMORY=100mb
 ARG ALPINE_VERSION=3.13.6
 ARG BASE_IMAGE=sutty/monit
 FROM ${BASE_IMAGE}:${ALPINE_VERSION} AS build
 MAINTAINER "f <f@sutty.nl>"
 ARG REDIS_VERSION=6.2.7
 ARG MAX_MEMORY=100mb
+ENV MAX_MEMORY=${MAX_MEMORY}
 
 RUN apk add --no-cache redis~${REDIS_VERSION}