diff --git a/DOCKER_AND_COMPOSE_VERSION_MATRIX b/DOCKER_AND_COMPOSE_VERSION_MATRIX
index 0284187..a9ac1be 100644
--- a/DOCKER_AND_COMPOSE_VERSION_MATRIX
+++ b/DOCKER_AND_COMPOSE_VERSION_MATRIX
@@ -1,5 +1,4 @@
 latest
-1.12  1.8.*
 1.13  1.10.*
 17    1.18.*
 17.03 1.11.*
diff --git a/Dockerfile b/Dockerfile
index 892c09b..a8a30e2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,8 +4,8 @@ FROM docker:${DOCKER_VERSION}
 ARG COMPOSE_VERSION=
 ARG DOCKER_VERSION
 
-RUN apk add --no-cache py3-pip
-RUN apk add --virtual build-dependencies python3-dev libffi-dev openssl-dev gcc libc-dev make \
+RUN apk add --no-cache py3-pip python3
+RUN apk add --no-cache --virtual build-dependencies python3-dev libffi-dev openssl-dev gcc libc-dev make \
   && pip3 install "docker-compose${COMPOSE_VERSION:+==}${COMPOSE_VERSION}" \
   && apk del build-dependencies