simple updates...

* .gitignore - don't ignore whole dirs and then opt-in specific files
* Makefile
- fail if required vars aren't set
- SCRIPTS --> ALL_SCRIPTS
* profiles/README.md
- variables.yaml --> vars.json
- drop 'not possible to add/modify/remove arbitrary files' comment
* make-amis
- use -eq for integer comparison
- make shellcheck happier with printf's
- remove old bad-idea TODO

4 files changed, 12 insertions, 23 deletions

diff --git a/.gitignore b/.gitignore
index 89f22ab..ff26dbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,14 +2,3 @@
 **/*.bak
 **/*.swp
 /build/
-/profiles/*
-!/profiles/README.md
-!/profiles/base/
-!/profiles/arch/
-!/profiles/version/
-!/profiles/alpine.conf
-!/profiles/example.conf
-!/profiles/test.conf
-/releases/*
-!/releases/README.md
-!/releases/alpine.yaml
diff --git a/Makefile b/Makefile
index 626f6c8..8247c9b 100644
--- a/Makefile
+++ b/Makefile
@@ -12,18 +12,24 @@ LEVEL :=
 PACKER := packer
 export PACKER
 
+require_var = $(if $(value $1),,$(error $1=... required))
+
 .PHONY: amis prune release-readme clean
 
 amis: build build/packer.json build/profile/$(PROFILE) build/update-release.py
+        @:$(call require_var, PROFILE)
         build/make-amis $(PROFILE) $(BUILDS)
 
 prune: build build/prune-amis.py
+        @:$(call require_var, LEVEL)
+        @:$(call require_var, PROFILE)
         build/prune-amis.py $(LEVEL) $(PROFILE) $(BUILD)
 
 release-readme: build build/gen-release-readme.py
+        @:$(call require_var, PROFILE)
         build/gen-release-readme.py $(PROFILE)
 
-build: $(SCRIPTS)
+build: $(ALL_SCRIPTS)
         [ -d build/profile ] || mkdir -p build/profile
         python3 -m venv build/.py3
         build/.py3/bin/pip install pyhocon pyyaml boto3
@@ -33,6 +39,7 @@ build/packer.json: build packer.conf
         build/.py3/bin/pyhocon -i packer.conf -f json > build/packer.json
 
 build/profile/$(PROFILE): build build/resolve-profile.py $(CORE_PROFILES) $(TARGET_PROFILES)
+        @:$(call require_var, PROFILE)
         build/resolve-profile.py $(PROFILE)
 
 %.py: %.py.in build
diff --git a/profiles/README.md b/profiles/README.md
index 107b59e..2dfd50e 100644
--- a/profiles/README.md
+++ b/profiles/README.md
@@ -1,7 +1,7 @@
 # Profiles
 
 Profiles are collections of related build definitions, which are used to
-generate the `variables.yaml` files that [Packer](https://packer.io) consumes
+generate the `vars.json` files that [Packer](https://packer.io) consumes
 when building AMIs.
 
 Profiles use [HOCON](https://github.com/lightbend/config/blob/master/HOCON.md)
@@ -150,8 +150,3 @@ ami_access {
 * The AMI's login user is currently hard coded to be `alpine`.  Changes to
   [tiny-ec2-bootstrap](https://github.com/mcrute/tiny-ec2-bootstrap) are
   required before we can truly make `ami_user` configurable.
-
-* Currently, it is not possible to add/modify/remove arbitrary files (such as
-  service config files) on the filesystem which ultimately becomes the AMI.
-  One workaround is to use a "user data" script to make any necessary changes
-  (during the "default" runlevel) when an instance first launches.
diff --git a/scripts/make-amis b/scripts/make-amis
index d93a266..9ea3a16 100755
--- a/scripts/make-amis
+++ b/scripts/make-amis
@@ -18,7 +18,7 @@ PROFILE=$1; shift
 
 for BUILD in $BUILDS
 do
-    printf "\n*** $BUILD ***\n\n"
+    printf "\n*** %s ***\n\n" "$BUILD"
 
     BUILD_DIR="profile/$PROFILE/$BUILD"
 
@@ -36,7 +36,7 @@ do
         )
         # update core version profile's release if necessary
         if [ "$alpine_release" != "$release" ]; then
-            printf "=== New release ($alpine_release) detected! ===\n\n"
+            printf "=== New release (%s) detected! ===\n\n" "$alpine_release"
             sed -i '' -e "s/$release/$alpine_release/" "../profiles/version/$version"
             ./resolve-profile.py "$PROFILE"
             # NOTE: this does NOT update 'revision', it's at target profile/build level
@@ -50,12 +50,10 @@ do
     ) | tee "$BUILD_DIR/output"
     EXIT=$(cat "$BUILD_DIR/exit")
 
-    if [ "$EXIT" = "0" ]; then
+    if [ "$EXIT" -eq 0 ]; then
         ./update-release.py "$PROFILE" "$BUILD"
     else
         # unless AMI revision already exists, exit
         grep -q 'is used by an existing AMI' "$BUILD_DIR/output" || exit "$EXIT"
     fi
 done
-
-# TODO?  if PROFILE = alpine-amis then prune?, gen-releases?