Improve cache behaviour

docker-compose.m4

@@ -31,7 +31,6 @@ services:
       dockerfile: ./pleroma.dockerfile
       args:
         env(`pleroma_version')
-        env_fb(`mix_env', `prod')
     restart: unless-stopped
     links:
       - db

entrypoint.ash

@@ -2,6 +2,24 @@
 
 set -e
 
+function compile {
+    # Make sure that the tooling is present
+    mix local.hex --force
+    mix local.rebar --force
+
+    # Recompile
+    mix deps.get
+    mix compile
+}
+
+# Execute onbuild actions if required
+if [[ "$1" == "onbuild" ]]; then
+    # On build we use the sources instead of the runtime
+    cd /pleroma
+    compile
+    exit 0
+fi
+
 # Ensure that the environment is clean
 if [[ -d /pleroma-runtime ]]; then
     rm -rf /pleroma-runtime
@@ -17,13 +35,8 @@ rsync -azI /custom.d/ /pleroma-runtime/
 # Go to runtime workspace
 cd /pleroma-runtime
 
-# Make sure that the tooling is present
-mix local.hex --force
-mix local.rebar --force
-
-# Recompile
-mix deps.get
-mix clean && mix compile
+# Build
+compile
 
 # Prepare DB
 mix ecto.create

pleroma

@@ -34,20 +34,6 @@ Actions:
 "
 }
 
-function run_dockerized {
-    log_info "Stopping existing containers (if any)"
-    docker-compose down
-
-    log_info "Rebuilding images"
-    docker-compose build
-
-    log_info "Running action '$1'"
-    docker-compose run server $1
-
-    log_info "Cleaning up.."
-    docker-compose down
-}
-
 function action__start {
     log_info "Booting pleroma"
     docker-compose up --remove-orphans -d
@@ -65,7 +51,8 @@ function action__logs {
 }
 
 function action__build {
-    docker-compose build
+    docker-compose pull
+    docker-compose build --build-arg __BUST_CACHE="$(date)" server
 }
 
 function action__enter {

pleroma.dockerfile

@@ -1,25 +1,42 @@
 FROM elixir:1.6-alpine
 
-WORKDIR /pleroma
+env MIX_HOME /mix
+env MIX_ARCHIVES /mix-archives
 
 # Prepare system
 RUN apk add --no-cache --virtual .build alpine-sdk git rsync
 
 # Perform a clone that can be cached
-RUN git clone https://git.pleroma.social/pleroma/pleroma.git .
+WORKDIR /pleroma
+RUN git clone --progress https://git.pleroma.social/pleroma/pleroma.git .
 
-# Prepare pleroma
-ADD ./docker-config.exs /docker-config.exs
+# Bust the cache with a build arg
+# that is different on every build
+ARG __BUST_CACHE
+ENV __BUST_CACHE $__BUST_CACHE
+
+# Update pleroma
 ARG PLEROMA_VERSION
 RUN \
     git checkout $PLEROMA_VERSION && \
-    git pull --rebase --autostash && \
+    git pull --rebase --autostash
+
+# Inject config
+ADD ./docker-config.exs /docker-config.exs
+RUN \
     ln -s /docker-config.exs config/prod.secret.exs && \
     ln -s /docker-config.exs config/dev.secret.exs
 
+# Correct paths
+WORKDIR /
+VOLUME /custom.d
+
 # Register entrypoint
 ADD ./entrypoint.ash /
 RUN chmod +x /entrypoint.ash
 CMD ["/entrypoint.ash"]
 
+# Call entrypoint to precompile pleroma
+RUN /entrypoint.ash onbuild
+
 EXPOSE 4000