Cleanup: Set all default values in Dockerfile

Author: gw0

Dockerfile

@@ -13,7 +13,7 @@ LABEL org.opencontainers.image.source https://github.com/rpardini/docker-registr
 RUN apk add --no-cache --update bash ca-certificates-bundle coreutils openssl
 
 # If set to 1, enables building mitmproxy, which helps a lot in debugging, but is super heavy to build.
-ARG DEBUG_BUILD="1"
+ARG DEBUG_BUILD="0"
 ENV DO_DEBUG_BUILD="$DEBUG_BUILD"
 
 # Build mitmproxy via pip. This is heavy, takes minutes do build and creates a 90mb+ layer. Oh well.
@@ -60,9 +60,10 @@ EXPOSE 8082
 
 ## Default envs.
 # A space delimited list of registries we should proxy and cache; this is in addition to the central DockerHub.
-ENV REGISTRIES="k8s.gcr.io gcr.io quay.io"
+ENV REGISTRIES="docker.caching.proxy.internal registry-1.docker.io auth.docker.io k8s.gcr.io gcr.io quay.io gitlab.com"
 # A space delimited list of registry:user:password to inject authentication for
-ENV AUTH_REGISTRIES="some.authenticated.registry:oneuser:onepassword another.registry:user:password"
+# (e.g. AUTH_REGISTRIES="auth.docker.io:dhuser:dhpass gitlab.com:gluser:glpass")
+ENV AUTH_REGISTRIES=""
 # Should we verify upstream's certificates? Default to true.
 ENV VERIFY_SSL="true"
 # Enable debugging mode; this inserts mitmproxy/mitmweb between the CONNECT proxy and the caching layer
@@ -72,6 +73,9 @@ ENV DEBUG_HUB="false"
 # Enable nginx debugging mode; this uses nginx-debug binary and enabled debug logging, which is VERY verbose so separate setting
 ENV DEBUG_NGINX="false"
 
+# Set Docker Registry cache size, by default, 32 GB ('32g')
+ENV CACHE_MAX_SIZE="32g"
+
 # Manifest caching tiers. Disabled by default, to mimick 0.4/0.5 behaviour.
 # Setting it to true enables the processing of the ENVs below.
 # Once enabled, it is valid for all registries, not only DockerHub.

entrypoint.sh

@@ -36,7 +36,7 @@ ALLDOMAINS=""
 echo -n "" > /etc/nginx/docker.intercept.map
 
 # Some hosts/registries are always needed, but others can be configured in env var REGISTRIES
-for ONEREGISTRYIN in docker.caching.proxy.internal registry-1.docker.io auth.docker.io ${REGISTRIES}; do
+for ONEREGISTRYIN in ${REGISTRIES}; do
     ONEREGISTRY=$(echo ${ONEREGISTRYIN} | xargs) # Remove whitespace
     echo "Adding certificate for registry: $ONEREGISTRY"
     ALLDOMAINS="${ALLDOMAINS},DNS:${ONEREGISTRY}"
@@ -87,9 +87,6 @@ fi
 echo "        listen 443 ssl default_server;" > /etc/nginx/caching.layer.listen
 echo "error_log  /var/log/nginx/error.log warn;" > /etc/nginx/error.log.debug.warn
 
-# Set Docker Registry cache size, by default, 32 GB ('32g')
-CACHE_MAX_SIZE=${CACHE_MAX_SIZE:-32g}
-
 # The cache directory. This can get huge. Better to use a Docker volume pointing here!
 # Set to 32gb which should be enough
 echo "proxy_cache_path /docker_mirror_cache levels=1:2 max_size=$CACHE_MAX_SIZE inactive=60d keys_zone=cache:10m use_temp_path=off;" > /etc/nginx/conf.d/cache_max_size.conf