Update Dockerfile & build script and add /etc/nsswitch.conf:

- Add nsswitch.conf to configure LibC Name Service inside the container
- Change my email in the Dockerfile
- Update build script to install software as a `build-deps` virtual package so that adding a package to it will be automatically	removed at the end of the build script

docker/build.sh

@@ -7,7 +7,7 @@ export GOPATH=/tmp/go
 export PATH=${PATH}:${GOPATH}/bin
 
 # Install build deps
-apk -U --no-progress add linux-pam-dev go@community gcc musl-dev
+apk -U --no-progress add --virtual build-deps linux-pam-dev go@community gcc musl-dev
 
 # Init go environment to build Gogs
 mkdir -p ${GOPATH}/src/github.com/gogits/
@@ -20,7 +20,7 @@ go build -tags "sqlite cert pam"
 rm -r $GOPATH
 
 # Remove build deps
-apk --no-progress del linux-pam-dev go gcc musl-dev
+apk --no-progress del build-deps
 
 # Create git user for Gogs
 adduser -H -D -g 'Gogs Git User' git -h /data/git -s /bin/bash && passwd -u git

docker/nsswitch.conf

@@ -0,0 +1,16 @@
+# /etc/nsswitch.conf
+
+passwd:         compat
+group:          compat
+shadow:         compat
+
+hosts:          files dns
+networks:       files
+
+protocols:      db files
+services:       db files
+ethers:         db files
+rpc:            db files
+
+netgroup:       nis
+