Fix ARG COMPOSE_VERSION being defind outside build stage

See https://docs.docker.com/engine/reference/builder/#understand-how-arg-and-from-interact

1.12/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.8.*
-
 FROM docker:1.12
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.8.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

1.13/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.10.*
-
 FROM docker:1.13
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.10.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

17.03/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.11.*
-
 FROM docker:17.03
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.11.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

17.06/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.15.*
-
 FROM docker:17.06
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.15.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

17.09/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.16.*
-
 FROM docker:17.09
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.16.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

17.12/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.18.*
-
 FROM docker:17.12
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.18.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

17/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.18.*
-
 FROM docker:17
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.18.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

18.02/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.19.*
-
 FROM docker:18.02
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.19.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

18/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=1.19.*
-
 FROM docker:18
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=1.19.*
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"

latest/Dockerfile

@@ -1,7 +1,7 @@
-ARG COMPOSE_VERSION=
-
 FROM docker:latest
 MAINTAINER Tobias Maier <tobias.maier@baucloud.com>
 
+ARG COMPOSE_VERSION=
+
 RUN apk add --no-cache py-pip
 RUN pip install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}"