1 files changed, 33 insertions, 0 deletions
diff --git a/bin/docker-dotenv b/bin/docker-dotenv
new file mode 100755
index 0000000..ca025c0
--- /dev/null
+++ b/bin/docker-dotenv
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# input:
+# SOURCE_IMAGE: Image name for the source image
+# TARGET_IMAGE: Name of image to build
+# DOTENV: The name of the .env.* file that contains the default env vars to export.
+#   e.g. DOTENV=".env.12-3-stable"
+
+set -e
+
+cd "$(dirname "$0")/.."
+DOCKERFILE=Dockerfile.env
+
+rm -f $DOCKERFILE
+touch $DOCKERFILE
+echo "FROM $SOURCE_IMAGE" > $DOCKERFILE
+
+echo "Reading... $DOTENV"
+cat $DOTENV
+
+while IFS= read -r line; do
+  echo "ENV $line" >> $DOCKERFILE
+done < $DOTENV
+
+echo "Pulling... $SOURCE_IMAGE"
+docker pull $SOURCE_IMAGE
+
+echo "Building... $DOCKERFILE and tagging $TARGET_IMAGE"
+cat $DOCKERFILE
+docker build -t $TARGET_IMAGE -f $DOCKERFILE .
+
+echo "Verifying env..."
+docker run --entrypoint='' $TARGET_IMAGE env