diff --git a/.travis.yml b/.travis.yml
index a42996d..8c791e0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,4 +29,4 @@ branches:
     - master
 
 script:
-  - ./lint.sh --sh
+  - ./dev/util/shellcheck.sh
diff --git a/Dockerfile b/Dockerfile
index 61ecd60..3b1a02a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,20 +1,16 @@
-ARG pg_alpine_branch
-FROM alpine:${pg_alpine_branch}
+ARG alpine_version
+FROM alpine:${alpine_version}
 
-ARG pg_alpine_branch
-ARG pg_version
+ARG alpine_version
+ARG pg_full_version
 
 #--------------------------------------------------------------------------------
 # Install dependencies
 #--------------------------------------------------------------------------------
 # "postgresql" is required for "pg_restore"
-# "python" is required for "aws-cli"
 #--------------------------------------------------------------------------------
-RUN echo "http://dl-cdn.alpinelinux.org/alpine/v${pg_alpine_branch}/main" >> /etc/apk/repositories
-
-RUN apk --no-cache add dumb-init postgresql=${pg_version} python py-pip && \
-	pip install awscli && \
-	apk --purge -v del py-pip
+RUN echo "http://dl-cdn.alpinelinux.org/alpine/v${alpine_version}/main" >> /etc/apk/repositories
+RUN apk --no-cache --update add dumb-init postgresql=${pg_full_version} aws-cli
 
 #--------------------------------------------------------------------------------
 # Set script permissions and create required directories
diff --git a/README.md b/README.md
index f1bc80f..44f871f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,25 @@
 
 Cron based download from s3 and database restore.
 
+## Build
+
+`./build_push.sh [-p <FILE>, --package <FILE>]`
+
+`./build_push.sh -p 12.4-3.12`
+
+### Package files
+
+Each package file represents a release for a particular `postgres` branch.
+
+The contents of the latest package file may look like this:
+
+```
+ALPINE_VERSION='3.12'
+PG_BASE_VERSION='12'
+PG_FULL_VERSION='12.4'
+PG_LATEST=true
+```
+
 ## Usage
 
 Typically this image is instantiated as a container among many others and would have the responsibility of getting downloading a dump file from s3 and restoring a database at a particular time of day.
diff --git a/action.sh b/action.sh
index b6bfbfe..53bcf7c 100755
--- a/action.sh
+++ b/action.sh
@@ -100,10 +100,10 @@ if [ -n "$PRE_RESTORE_PSQL" ]; then
 fi
 
 if [ -n "$SCHEMA" ]; then
-    printf '%s' "    pg_restore --jobs $(grep -c ^processor /proc/cpuinfo) --schema $SCHEMA --no-owner -d <DATABASE_URL> /cache/${dump_file}"
+    printf '\n%s' "    pg_restore --jobs $(grep -c ^processor /proc/cpuinfo) --schema $SCHEMA --no-owner -d <DATABASE_URL> /cache/${dump_file}"
     pg_restore --jobs "$(grep -c ^processor /proc/cpuinfo)" --schema "$SCHEMA" --no-owner -d "${DATABASE_URL}" "/cache/${dump_file}"
 else
-    printf '%s' "    pg_restore --jobs $(grep -c ^processor /proc/cpuinfo) --no-owner -d <DATABASE_URL> /cache/${dump_file}"
+    printf '\n%s' "    pg_restore --jobs $(grep -c ^processor /proc/cpuinfo) --no-owner -d <DATABASE_URL> /cache/${dump_file}"
     pg_restore --jobs "$(grep -c ^processor /proc/cpuinfo)" --no-owner -d "${DATABASE_URL}" "/cache/${dump_file}"
 fi
 
diff --git a/build_push.sh b/build_push.sh
index adc4f26..b7047f2 100755
--- a/build_push.sh
+++ b/build_push.sh
@@ -1,21 +1,56 @@
 #!/usr/bin/env sh
 
-builds=$(echo '
-9.6.10    9.6.10-r0   3.6
-9.6       9.6.10-r0   3.6
-9         9.6.10-r0   3.6
-latest    9.6.10-r0   3.6
-' | grep -v '^#' | tr -s ' ')
-
-# shellcheck disable=SC2039
-IFS=$'\n'
-for build in $builds; do
-  tag=$(echo "${build}" | cut -d ' ' -f 1 )
-  pg_version=$(echo "${build}" | cut -d ' ' -f 2)
-  pg_alpine_version=$(echo "${build}" | cut -d ' ' -f 3)
-
-  echo docker build --tag bluedrop360/postgres-restore-from-s3:"${tag}" --build-arg pg_version="${pg_version}" --build-arg pg_alpine_branch="${pg_alpine_version}" .
-  eval docker build --tag bluedrop360/postgres-restore-from-s3:"${tag}" --build-arg pg_version="${pg_version}" --build-arg pg_alpine_branch="${pg_alpine_version}" .
-  echo docker push bluedrop360/postgres-restore-from-s3:"${tag}"
-  eval docker push bluedrop360/postgres-restore-from-s3:"${tag}"
+#------------------------------------------------------------------------------------
+# Loop over arguments
+#------------------------------------------------------------------------------------
+for arg in "$@"; do
+    # [ -p | --package ]
+    if [ -n "${package_flag}" ]; then
+        package_flag=''
+        package="${arg}"
+    fi
+
+    if [ "${arg}" = "-p" ] || [ "${arg}" = "--package" ]; then
+        package_flag=true
+    fi
+done
+
+#------------------------------------------------------------------------------------
+# Exit on error
+#------------------------------------------------------------------------------------
+if [ -z "${package}" ]; then
+  echo '> Package file not specified: [-p <FILE>, --package <FILE>]'
+  exit 127
+fi
+
+if [ -f "./package/${package}.env" ]; then
+  . "./package/${package}.env"
+else
+  echo "> Package file not found: './package/${package}.env'"
+  exit 127
+fi
+
+builds=\
+"${PG_FULL_VERSION}_${PG_FULL_VERSION}-r0_${ALPINE_VERSION}",\
+"${PG_BASE_VERSION}_${PG_FULL_VERSION}-r0_${ALPINE_VERSION}"
+
+if [ "${PG_LATEST:-'false'}" = 'true' ]; then
+  builds="${builds}","latest_${PG_FULL_VERSION}-r0_${ALPINE_VERSION}"
+fi
+
+echo $builds | tr ',' '\n' | while read build; do
+  ALPINE_VERSION=$(echo "${build}" | cut -d '_' -f 3)
+  pg_restore_from_s3_tag=$(echo "${build}" | cut -d '_' -f 1 )
+  PG_FULL_VERSION=$(echo "${build}" | cut -d '_' -f 2)
+
+  echo ""
+  echo "--------------------------------"
+  echo "POSTGRES-RESTORE-FROM-S3 TAG: ${pg_restore_from_s3_tag}"
+  echo "POSTGRES PACKAGE VERSION: ${PG_FULL_VERSION}"
+  echo "--------------------------------"
+
+  echo docker build --tag bluedrop360/postgres-restore-from-s3:$pg_restore_from_s3_tag --build-arg pg_full_version=$PG_FULL_VERSION --build-arg alpine_version="${ALPINE_VERSION}" .
+  eval docker build --tag bluedrop360/postgres-restore-from-s3:$pg_restore_from_s3_tag --build-arg pg_full_version=$PG_FULL_VERSION --build-arg alpine_version="${ALPINE_VERSION}" . || exit 1
+  echo docker push bluedrop360/postgres-restore-from-s3:$pg_restore_from_s3_tag
+  eval docker push bluedrop360/postgres-restore-from-s3:$pg_restore_from_s3_tag || exit 1
 done
diff --git a/dev/util/shellcheck.sh b/dev/util/shellcheck.sh
new file mode 100755
index 0000000..af7e20d
--- /dev/null
+++ b/dev/util/shellcheck.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env sh
+
+printf '\n%s\n' "Checking shell scripts..."
+
+SHELLCHECK_OPTS=""
+
+RUN_SHELLCHECK="shellcheck ${ALLOW_EXTERNAL_SOURCE:-} ${SHELLCHECK_OPTS} {} +"
+eval "find ./*.sh -type f -exec ${RUN_SHELLCHECK}"
diff --git a/docker-compose.yml b/docker-compose.yml
index 70c2799..8d2bc99 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,14 +11,14 @@ version: '3'
 
 services:
   postgres-restore-from-s3:
-    image: postgres-restore-from-s3:9.6.10
+    image: postgres-restore-from-s3:11.7
     network_mode: 'host'
     build:
       context: ./
       dockerfile: ./Dockerfile
       args:
-        pg_alpine_branch: '3.6'
-        pg_version: '9.6.10-r0'
+        alpine_version: '3.12'
+        pg_full_version: '12.4-r0'
     environment:
       AWS_BUCKET: <AWS_BUCKET_NAME>
       AWS_REGION: <AWS_REGION_NAME>
diff --git a/lint.sh b/lint.sh
deleted file mode 100644
index be6fb52..0000000
--- a/lint.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env sh
-
-ALLOW_EXTERNAL_SOURCE="${ALLOW_EXTERNAL_SOURCE:-}"
-
-if [ "${1}" = "--yml" ]; then
-    printf '\n%s\n' "Checking '.travis.yml'..."
-    travis lint ./.travis.yml
-fi
-
-if [ "${1}" = "--sh" ]; then
-    printf '\n%s\n' "Checking shell scripts..."
-
-    SHELLCHECK_OPTS=""
-
-    RUN_SHELLCHECK="shellcheck ${ALLOW_EXTERNAL_SOURCE} ${SHELLCHECK_OPTS} {} +"
-    eval "find ./*.sh -type f -exec ${RUN_SHELLCHECK}"
-fi
diff --git a/package/10.12-3.8.env b/package/10.12-3.8.env
new file mode 100644
index 0000000..c1f48eb
--- /dev/null
+++ b/package/10.12-3.8.env
@@ -0,0 +1,3 @@
+ALPINE_VERSION='3.8'
+PG_BASE_VERSION='10'
+PG_FULL_VERSION='10.12'
diff --git a/package/11.7-3.9.env b/package/11.7-3.9.env
new file mode 100644
index 0000000..970ec5b
--- /dev/null
+++ b/package/11.7-3.9.env
@@ -0,0 +1,4 @@
+ALPINE_VERSION='3.9'
+PG_LATEST=false
+PG_BASE_VERSION='11'
+PG_FULL_VERSION='11.7'
diff --git a/package/12.4-3.12.env b/package/12.4-3.12.env
new file mode 100644
index 0000000..806b28e
--- /dev/null
+++ b/package/12.4-3.12.env
@@ -0,0 +1,4 @@
+ALPINE_VERSION='3.12'
+PG_LATEST=false
+PG_BASE_VERSION='12'
+PG_FULL_VERSION='12.4'
diff --git a/package/9.6.13-3.6.env b/package/9.6.13-3.6.env
new file mode 100644
index 0000000..9ee2ce9
--- /dev/null
+++ b/package/9.6.13-3.6.env
@@ -0,0 +1,3 @@
+ALPINE_VERSION='3.6'
+PG_BASE_VERSION='9'
+PG_FULL_VERSION='9.6.13'