Add a bitwarden label to docker images (#305)

* Add a bitwarden label to docker images

* Prefix label with reverse DNS

src/Admin/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/aspnetcore:2.0.6
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \

src/Api/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/aspnetcore:2.0.6
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         cron \

src/Icons/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/aspnetcore:2.0.6
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \

src/Identity/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/aspnetcore:2.0.6
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \

util/Attachments/Dockerfile

@@ -1,5 +1,7 @@
 FROM bitwarden/server
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \

util/MsSql/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/mssql-server-linux:2017-CU7
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         cron \

util/Nginx/Dockerfile

@@ -1,5 +1,7 @@
 FROM nginx:1.12
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         gosu \

util/Server/Dockerfile

@@ -1,2 +1,5 @@
 FROM microsoft/aspnetcore:2.0.6
+
+LABEL com.bitwarden.product="bitwarden"
+
 COPY obj/Docker/publish /bitwarden_server

util/Setup/Dockerfile

@@ -1,5 +1,7 @@
 FROM microsoft/dotnet:2.0.6-runtime
 
+LABEL com.bitwarden.product="bitwarden"
+
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
         openssl \