Invert `copiestree` feature as `sharedvolume`

3 files changed, 8 insertions, 6 deletions

diff --git a/blubber.example.json b/blubber.example.json
index 8c8a6f5..b911764 100644
--- a/blubber.example.json
+++ b/blubber.example.json
@@ -5,12 +5,12 @@
   "run": { "in": "/srv/service", "as": "runuser", "uid": 666, "gid": 666 },
   "variants": {
     "development": {
-      "apt": { "packages": ["libjpeg-dev", "libyaml-dev"] }
+      "apt": { "packages": ["libjpeg-dev", "libyaml-dev"] },
+      "sharedvolume": true
     },
     "test": {
       "includes": ["development"],
       "apt": { "packages": ["chromium"] },
-      "copiestree": true,
       "entrypoint": ["npm", "test"]
     },
     "production": {
diff --git a/config/common.go b/config/common.go
index 782c454..492171e 100644
--- a/config/common.go
+++ b/config/common.go
@@ -5,7 +5,7 @@ type CommonConfig struct {
 	Apt AptConfig `json:apt`
 	Npm NpmConfig `json:npm`
 	Run RunConfig `json:run`
-	CopiesTree bool `json:copiestree`
+	SharedVolume bool `json:sharedvolume`
 	EntryPoint []string `json:entrypoint`
 }
 
@@ -18,7 +18,7 @@ func (cc1 *CommonConfig) Merge(cc2 CommonConfig) {
 	cc1.Npm.Merge(cc2.Npm)
 	cc1.Run.Merge(cc2.Run)
 
-	cc1.CopiesTree = cc1.CopiesTree || cc2.CopiesTree
+	cc1.SharedVolume = cc1.SharedVolume || cc2.SharedVolume
 
 	if len(cc1.EntryPoint) < 1 {
 		cc1.EntryPoint = cc2.EntryPoint
diff --git a/docker/compiler.go b/docker/compiler.go
index 5727b11..ed3cd48 100644
--- a/docker/compiler.go
+++ b/docker/compiler.go
@@ -45,8 +45,10 @@ func CompileStage(buffer *bytes.Buffer, stage string, vcfg *config.VariantConfig
 		Writeln(buffer, "WORKDIR ", vcfg.Run.In)
 	}
 
-	if vcfg.CopiesTree {
-		Writeln(buffer, "COPY . .")
+	if vcfg.SharedVolume {
+		Writeln(buffer, "VOLUME [\"", vcfg.Run.In, "\"]")
+  } else {
+		Writeln(buffer, "COPY . \"", vcfg.Run.In, "\"")
 	}
 
 	CompileToCommands(buffer, vcfg.Npm)