Dockerfile: make base-image an ARG

cyber-dojo · Jan 25, 2025 · 46d7c3d · 46d7c3d
1 parent a6be045
commit 46d7c3d
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Showing 14 changed files with 72 additions and 24 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -1,14 +1,19 @@
-FROM cyberdojo/docker-base:d6830c0
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
 LABEL maintainer=jon@jaggersoft.com
 
+# ARGs are reset after FROM See https://github.com/moby/moby/issues/34129
+ARG BASE_IMAGE
+ENV BASE_IMAGE=${BASE_IMAGE}
+
+ARG COMMIT_SHA
+ENV SHA=${COMMIT_SHA}
+
 RUN gem install --no-document 'concurrent-ruby'
 
 WORKDIR /runner
 COPY source/server/ .
 
-ARG COMMIT_SHA
-ENV SHA=${COMMIT_SHA}
-
 USER root
 HEALTHCHECK --interval=1s --timeout=1s --retries=5 --start-period=5s CMD /runner/config/healthcheck.sh
 ENTRYPOINT ["/sbin/tini", "-g", "--"]

diff --git a/README.md b/README.md
@@ -15,6 +15,7 @@ API
 * [GET alive](docs/api.md#get-alive)  
 * [GET ready](docs/api.md#get-ready)
 * [GET sha](docs/api.md#get-sha)
+* [GET base_image](docs/api.md#get-base-image)
 
 ***
 

diff --git a/bin/build_image.sh b/bin/build_image.sh
@@ -51,13 +51,13 @@ build_image()
   check_args "$@"
   local -r type="${1}"
   exit_non_zero_unless_installed docker
-  export $(echo_versioner_env_vars)
+  export $(echo_env_vars)
   containers_down
   remove_old_images
 
-  docker compose build --build-arg COMMIT_SHA="${COMMIT_SHA}" server
+  docker compose build server
   if [ "${type}" == 'client' ]; then
-    docker compose build --build-arg COMMIT_SHA="${COMMIT_SHA}" client
+    docker compose build client
   fi
 
   local -r image_name="${CYBER_DOJO_RUNNER_IMAGE}:${CYBER_DOJO_RUNNER_TAG}"

diff --git a/bin/check_coverage.sh b/bin/check_coverage.sh
@@ -41,7 +41,7 @@ check_args()
 check_coverage()
 {
   check_args "$@"
-  export $(echo_versioner_env_vars)
+  export $(echo_env_vars)
 
   local -r TYPE="${1}"           # {server|client}
   local -r TEST_LOG=test.log

diff --git a/bin/demo.sh b/bin/demo.sh
@@ -6,7 +6,7 @@ export ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 readonly DEMO_FILENAME="/tmp/runner_demo.html"
 
 source "${ROOT_DIR}/bin/lib.sh"
-export $(echo_versioner_env_vars)
+export $(echo_env_vars)
 docker compose --progress=plain up --wait --wait-timeout=10 client
 docker exec -it test_runner_client ruby /runner/demo.rb > "${DEMO_FILENAME}"
 open "file://${DEMO_FILENAME}"
diff --git a/bin/lib.sh b/bin/lib.sh
@@ -46,11 +46,25 @@ containers_down()
   docker compose down --remove-orphans --volumes
 }
 
-echo_versioner_env_vars()
+echo_base_image()
 {
-  local -r sha="$(cd "${ROOT_DIR}" && git rev-parse HEAD)"
-  echo COMMIT_SHA="${sha}"
+  local -r json="$(curl --fail --silent --request GET https://beta.cyber-dojo.org/runner/base_image)"
+  echo "${json}" | jq -r '.base_image'
+}
+
+echo_env_vars()
+{
+  # --build-arg ...
+  if [[ ! -v CYBER_DOJO_RUNNER_BASE_IMAGE ]] ; then
+    echo CYBER_DOJO_RUNNER_BASE_IMAGE=cyberdojo/docker-base:d6830c0
+    #echo CYBER_DOJO_RUNNER_BASE_IMAGE="$(echo_base_image)"
+  fi
+  if [[ ! -v COMMIT_SHA ]] ; then
+    local -r sha="$(cd "${ROOT_DIR}" && git rev-parse HEAD)"
+    echo COMMIT_SHA="${sha}"
+  fi
 
+  # From versioner ...
   docker run --rm cyberdojo/versioner
 
   echo CYBER_DOJO_RUNNER_SHA="${sha}"

diff --git a/bin/run_tests.sh b/bin/run_tests.sh
@@ -7,7 +7,7 @@ source "${ROOT_DIR}/bin/lib.sh"
 source "${ROOT_DIR}/bin/create_test_data_manifests_file.sh"
 source "${ROOT_DIR}/bin/setup_dependent_images.sh"
 
-export $(echo_versioner_env_vars)
+export $(echo_env_vars)
 
 show_help()
 {

diff --git a/bin/snyk_container_scan.sh b/bin/snyk_container_scan.sh
@@ -3,7 +3,7 @@ set -Eeu
 
 export ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 source "${ROOT_DIR}/bin/lib.sh"
-export $(echo_versioner_env_vars)
+export $(echo_env_vars)
 
 readonly IMAGE_NAME="${CYBER_DOJO_RUNNER_IMAGE}:${CYBER_DOJO_RUNNER_TAG}"
 readonly SARIF_FILENAME=${SARIF_FILENAME:-snyk.container.scan.json}

diff --git a/docker-compose.yml b/docker-compose.yml
@@ -4,7 +4,9 @@ services:
   client:
     build:
       context: source/client
-      args: [ COMMIT_SHA ]
+      args:
+        - COMMIT_SHA
+        - BASE_IMAGE=${CYBER_DOJO_RUNNER_BASE_IMAGE}
     image: ${CYBER_DOJO_RUNNER_CLIENT_IMAGE}:${CYBER_DOJO_RUNNER_TAG}
     user: ${CYBER_DOJO_RUNNER_CLIENT_USER}
     container_name: ${CYBER_DOJO_RUNNER_CLIENT_CONTAINER_NAME}
@@ -21,7 +23,9 @@ services:
   server:
     build:
       context: .
-      args: [ COMMIT_SHA ]
+      args:
+        - COMMIT_SHA
+        - BASE_IMAGE=${CYBER_DOJO_RUNNER_BASE_IMAGE}
     image: ${CYBER_DOJO_RUNNER_IMAGE}:${CYBER_DOJO_RUNNER_TAG}
     user: ${CYBER_DOJO_RUNNER_SERVER_USER}
     container_name: ${CYBER_DOJO_RUNNER_SERVER_CONTAINER_NAME}

diff --git a/docs/api.md b/docs/api.md
@@ -127,6 +127,20 @@ The 40 character git commit sha used to create the Docker image.
   {"sha":"41d7e6068ab75716e4c7b9262a3a44323b4d1448"}
   ```
 
+- - - -
+## GET base_image
+The base-image used in the Dockerfile's FROM statement.
+- [JSON-in](#json-in) parameters
+  * none
+- returns the [JSON-out](#json-out) result, keyed on `"base_image"`
+  * eg `"cyberdojo/docker-base:d6830c0"`
+- example
+  ```bash     
+  $ curl --silent --request GET https://${DOMAIN}:${PORT}/base_image
+  {"base_image":"cyberdojo/docker-base:d6830c0"}  
+  ```
+
+
 - - - -
 ## JSON in
 - All methods pass any arguments as a json hash in the http request body.

diff --git a/source/client/Dockerfile b/source/client/Dockerfile
@@ -1,12 +1,17 @@
-FROM cyberdojo/docker-base:d6830c0
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
 LABEL maintainer=jon@jaggersoft.com
 
-WORKDIR /runner
-COPY . .
+# ARGs are reset after FROM See https://github.com/moby/moby/issues/34129
+ARG BASE_IMAGE
+ENV BASE_IMAGE=${BASE_IMAGE}
 
 ARG COMMIT_SHA
 ENV SHA=${COMMIT_SHA}
 
+WORKDIR /runner
+COPY . .
+
 USER nobody
 HEALTHCHECK --interval=1s --timeout=1s --retries=5 --start-period=5s CMD /runner/config/healthcheck.sh
 ENTRYPOINT ["/sbin/tini", "-g", "--"]

diff --git a/source/server/dispatcher.rb b/source/server/dispatcher.rb
@@ -12,9 +12,10 @@ def initialize(context)
   def call(path, body)
     args = parse_json_args(body)
     case path
-    when '/sha'                then ['sha',               prober.sha(**args)]
     when '/alive'              then ['alive?',            prober.alive?(**args)]
     when '/ready'              then ['ready?',            prober.ready?(**args)]
+    when '/sha'                then ['sha',               prober.sha(**args)]
+    when '/base_image'         then ['base_image',        prober.base_image(**args)]
     when '/pull_image'         then ['pull_image',        puller.pull_image(**args)]
     when '/run_cyber_dojo_sh'  then ['run_cyber_dojo_sh', runner.run_cyber_dojo_sh(**args)]
     else

diff --git a/source/server/prober.rb b/source/server/prober.rb
@@ -13,4 +13,8 @@ def ready?
   def sha
     ENV.fetch('SHA', nil)
   end
+
+  def base_image
+    ENV.fetch('BASE_IMAGE', nil)
+  end
 end
diff --git a/test/server/check_test_metrics.rb b/test/server/check_test_metrics.rb
@@ -38,10 +38,10 @@ def table_data
     [ 'test.branches.total',   test_cov['branches']['total' ], '<=', 0   ],
     [ 'test.branches.missed',  test_cov['branches']['missed'], '<=', 0   ],
     [ nil ],
-    [ 'code.lines.total',      code_cov['lines'   ]['total' ], '<=', 549 ],
-    [ 'code.lines.missed',     code_cov['lines'   ]['missed'], '<=', 1   ],
-    [ 'code.branches.total',   code_cov['branches']['total' ], '<=', 66  ],
-    [ 'code.branches.missed',  code_cov['branches']['missed'], '<=', 2   ],
+    [ 'code.lines.total',      code_cov['lines'   ]['total' ], '<=', 552 ],
+    [ 'code.lines.missed',     code_cov['lines'   ]['missed'], '<=', 3   ],
+    [ 'code.branches.total',   code_cov['branches']['total' ], '<=', 67  ],
+    [ 'code.branches.missed',  code_cov['branches']['missed'], '<=', 3   ],
   ]
 end