Do not copy useless files into the image

Move required files but 'nginx.tmpl' into a local 'app' folder and copy the
folder content into the image.

'nginx.tmpl' should be moved as well, but this is a breaking change for
configuration with a separate 'docker-gen' container. As such, this move
is delayed to the next ajor release.

Author: pini-gh

Dockerfile

@@ -64,7 +64,7 @@ ENV DOCKER_GEN_VERSION=${DOCKER_GEN_VERSION}
 
 COPY network_internal.conf /etc/nginx/
 
-COPY . /app/
+COPY app nginx.tmpl /app/
 WORKDIR /app/
 
 ENV DOCKER_HOST unix:///tmp/docker.sock

Dockerfile.alpine

@@ -61,7 +61,7 @@ ENV DOCKER_GEN_VERSION=${DOCKER_GEN_VERSION}
 
 COPY network_internal.conf /etc/nginx/
 
-COPY . /app/
+COPY app nginx.tmpl /app/
 WORKDIR /app/
 
 ENV DOCKER_HOST unix:///tmp/docker.sock