fix(tests): source /etc/environment only if it exists

Author: mboersma

builder/image/bin/boot

@@ -6,7 +6,9 @@
 # fail hard and fast even on pipelines
 set -eo pipefail
 
-source /etc/environment_proxy
+if [[ -f /etc/environment_proxy ]]; then
+	source /etc/environment_proxy
+fi
 
 # set debug based on envvar
 [[ $DEBUG ]] && set -x

builder/image/bin/entry

@@ -1,17 +1,19 @@
 #!/bin/bash
 set -eo pipefail
 
-source /etc/environment_proxy
+if [[ -f /etc/environment_proxy ]]; then
+	source /etc/environment_proxy
+fi
 
 # START jpetazzo/dind wrapper
 
 # First, make sure that cgroups are mounted correctly.
 CGROUP=/sys/fs/cgroup
 
-[ -d $CGROUP ] || 
+[ -d $CGROUP ] ||
 	mkdir $CGROUP
 
-mountpoint -q $CGROUP || 
+mountpoint -q $CGROUP ||
 	mount -n -t tmpfs -o uid=0,gid=0,mode=0755 cgroup $CGROUP || {
 		echo "Could not make a tmpfs mount. Did you use -privileged?"
 		exit 1
@@ -29,7 +31,7 @@ fi
 for SUBSYS in $(cut -d: -f2 /proc/1/cgroup)
 do
         [ -d $CGROUP/$SUBSYS ] || mkdir $CGROUP/$SUBSYS
-        mountpoint -q $CGROUP/$SUBSYS || 
+        mountpoint -q $CGROUP/$SUBSYS ||
                 mount -n -t cgroup -o $SUBSYS cgroup $CGROUP/$SUBSYS
 
         # The two following sections address a bug which manifests itself

builder/image/slugbuilder/builder/build.sh

@@ -1,7 +1,9 @@
 #!/bin/bash
 set -eo pipefail
 
-source /etc/environment_proxy
+if [[ -f /etc/environment_proxy ]]; then
+	source /etc/environment_proxy
+fi
 
 if [[ "$1" == "-" ]]; then
     slug_file="$1"

builder/image/slugrunner/runner/init

@@ -1,7 +1,9 @@
 #!/bin/bash
 set -eo pipefail
 
-source /etc/environment_proxy
+if [[ -f /etc/environment_proxy ]]; then
+	source /etc/environment_proxy
+fi
 
 ## Load slug from Bind Mount, URL or STDIN