insert port and version in template

.gitlab-ci.yml

@@ -14,8 +14,11 @@ include:
   image:
     name: gcr.io/kaniko-project/executor:debug
     entrypoint: [""]
+  variables:
+    CANTALOUPE_VERSION: 5.0.4
+    CANTALOUPE_PORT: 8182
   script:
-    - ./generate-dockerfile $BUILD_WITH
+    - ./generate-dockerfile --version=$CANTALOUPE_VERSION --port=$CANTALOUPE_PORT $BUILD_WITH
     - mkdir -p /kaniko/.docker
     - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
     - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/$DOCKERFILE --destination $IMAGE_TAG

Dockerfile.template

-ARG VERSION=5.0.4
-
-FROM debian:buster-slim AS build
+FROM index.docker.io/library/debian:buster-slim AS build
 WORKDIR /
 RUN apt-get -qq update && \
     apt-get -qq install wget unzip && \
     apt-get clean
-RUN wget -q https://github.com/cantaloupe-project/cantaloupe/releases/download/v${VERSION}/cantaloupe-${VERSION}.zip -O temp.zip && \
+RUN wget -q https://github.com/cantaloupe-project/cantaloupe/releases/download/v{{ version }}/cantaloupe-{{ version }}.zip -O temp.zip && \
     unzip temp.zip && \
-    mv cantaloupe-${VERSION} cantaloupe && \
+    mv cantaloupe-{{ version }} cantaloupe && \
 {%- if kakadu %}
     mkdir /kakadu && \
     mv cantaloupe/deps/Linux-x86-64/lib/* /kakadu && \
@@ -16,13 +14,11 @@ RUN wget -q https://github.com/cantaloupe-project/cantaloupe/releases/download/v
     rm cantaloupe/cantaloupe.properties.sample
 ADD ./cantaloupe.properties /cantaloupe/cantaloupe.properties
 
-FROM openjdk:16-slim-buster
+FROM index.docker.io/library/openjdk:16-slim-buster
 # This variable assignment is mandatory to use the value in ENTRYPOINT
-ENV VERSION=${VERSION}
-ENTRYPOINT ["/home/cantaloupe/run.sh", "$VERSION"]
+ENTRYPOINT ["/home/cantaloupe/run.sh", "{{ version }}"]
 CMD ["-Dcantaloupe.config=/home/cantaloupe/app/cantaloupe.properties"]
-ARG HTTP_PORT=8182
-HEALTHCHECK --start-period=30s CMD curl -sf 0.0.0.0:${HTTP_PORT} -o /dev/null || exit 1
+HEALTHCHECK --start-period=30s CMD curl -sf 0.0.0.0:{{ port }} -o /dev/null || exit 1
 RUN useradd cantaloupe && mkdir -p /home/cantaloupe/.cache/cantaloupe && chown -R cantaloupe: /home/cantaloupe/.cache
 COPY --chown=cantaloupe --from=build /cantaloupe/ /home/cantaloupe/app/
 ADD --chown=cantaloupe ./run.sh /home/cantaloupe/run.sh

generate-dockerfile-src/src/main.rs

@@ -12,6 +12,8 @@ struct TmpltArgs {
     kakadu: bool,
     openjpeg: bool,
     turbojpeg: bool,
+    version: String,
+    port: String,
 }
 
 fn main() -> Result<()> {
@@ -33,6 +35,8 @@ fn main() -> Result<()> {
         kakadu: false,
         openjpeg: false,
         turbojpeg: false,
+        version: String::with_capacity(5),
+        port: String::with_capacity(5),
     };
 
     for arg in env::args().skip(1) {
@@ -46,8 +50,22 @@ fn main() -> Result<()> {
             tmplt_args.openjpeg = true;
         } else if arg == "--turbojpeg" {
             tmplt_args.turbojpeg = true;
+        } else if arg.starts_with("--version=") {
+            tmplt_args.version = String::from(arg.split("=").nth(1).unwrap());
+        } else if arg.starts_with("--port=") {
+            tmplt_args.port = String::from(arg.split("=").nth(1).unwrap());
         }
     }
+
+    if tmplt_args.version.is_empty() {
+        eprintln!("Please declare Cantaloupe version with `--version=x.y.z`");
+        process::exit(1);
+    }
+    if tmplt_args.port.is_empty() {
+        eprintln!("Please declare Cantaloupe port with `--port=xxxxx`");
+        process::exit(1);
+    }
+
     let docker_image = TEMPLATE.render(
         "Dockerfile.template",
         &Context::from_serialize(&tmplt_args)?,